The 1968 Mustang GT 2+2 Fastback for sale stands out for its design, proportions, and engineering simplicity. Over five decades later, it continues to attract owners who appreciate its distinctive shape and mechanical character, but also recognise where thoughtful updates can make it better.
From its factory configuration, the ’68 GT delivered strong performance for its time. Yet in daily use or spirited driving today, its limitations begin to show, particularly in areas like braking, suspension, and overall refinement. That’s where well-chosen modifications make the most difference.
The best upgrades maintain the visual language of the original while improving responsiveness, comfort, and safety. Whether the focus is drivability, reliability, or long-distance touring, the right set of changes can transform the experience behind the wheel, without compromising what makes the car recognisable in the first place.
Building on a Strong Foundation
The 1968 Mustang GT 2+2 Fastback was an evolution of the iconic Mustang lineage. Following the success of the 1967 model, the 1968 version retained the aggressive fastback styling while introducing subtle refinements. These included a redesigned grille, and side marker lights, introduced to meet new federal regulations. The GT trim offered powerful V8 options such as the 390 cubic inch FE engine, performance suspension, and dual exhaust, solidifying the GT’s reputation as a formidable street machine.
However, as with many vehicles of the era, the 1968 GT Fastback’s charm came with limitations. Drum brakes, dated suspension geometry, and carbureted engines, while thrilling in their time, now benefit significantly from modern upgrades. Fortunately, today’s aftermarket industry offers solutions that retain the Mustang’s visual character while dramatically improving its capabilities.
Engine Upgrades That Respect the Legend
One of the most transformative modifications is upgrading the engine. While the factory 390 FE V8 is a respected powerplant, modern crate engines offer more horsepower, better efficiency, and greater reliability.
For enthusiasts seeking authenticity blended with modern engineering, a Coyote 5.0L V8 crate engine is a compelling choice. Used in late-model Mustangs, this DOHC engine produces over 460 horsepower while maintaining a naturally aspirated setup. Its compact size and aluminum block help reduce front-end weight, improving balance and handling.
Fuel injection is another essential upgrade. Swapping the original carburetor for electronic fuel injection (EFI) delivers consistent throttle response, better fuel economy, and smoother cold starts.
Those who prefer to retain their original FE engine can opt for internal upgrades such as forged pistons, a performance camshaft, and aluminum heads. These enhancements increase performance while preserving the car’s period-correct personality.
Transmission and Driveline
The factory 3-speed automatic or 4-speed manual transmission is serviceable but limited. Replacing these with a modern 6-speed manual, such as the 460hp Ford Gen 3 5.0L Ti-VCT DOHC “Coyote” V8 engine, delivers smoother shifts and a highway-friendly overdrive gear. This change allows the engine to run at lower RPMs during cruising, reducing wear and improving fuel efficiency.
For those preferring an automatic, the 10 speed automatic transmission combines classic usability with modern convenience. Controlled via an aftermarket controller, this transmission shifts smoothly and can handle substantial horsepower.
Upgrading the driveshaft to an aluminum or steel performance unit improves rotational efficiency, while a limited-slip differential (LSD) ensures both rear wheels put down power effectively during acceleration.
Suspension Enhancements
The stock suspension setup of the 1968 Mustang GT,consisting of a live rear axle with leaf springs and a basic double-wishbone front end,is prone to body roll and less responsive during aggressive driving.
Modern coilover suspension systems like those from RideTech or QA1 dramatically improve cornering stability, ride quality, and adjustability. These systems allow fine-tuning of ride height, damping, and rebound, making the Mustang more adaptable to varying road conditions or performance needs.
For the rear, converting to a three-link or four-link suspension improves axle control and wheel articulation. This setup delivers better traction under acceleration and reduced axle hop, especially when paired with performance shocks and adjustable panhard bars.
Upgrading the sway bars and strut tower braces further tightens the chassis, reducing flex and maintaining alignment geometry during cornering. The result is a significantly more responsive and enjoyable driving experience.
Braking Systems For Enhanced Safety
The 1968 GT Fastback originally offered front disc brakes with rear drums. While adequate by 1960s standards, modern braking systems drastically improve stopping power and safety.
Installing a four-wheel disc brake conversion kit is one of the most recommended upgrades. Kits from companies like Wilwood or Baer offer vented rotors, multi-piston calipers, and braided stainless steel lines, resulting in shorter stopping distances and improved pedal feel.
A power brake booster and upgraded master cylinder provide modern braking feedback without altering the stock appearance. For those tracking their vehicles or frequently driving spiritedly, adding a proportioning valve allows fine-tuning of front and rear braking bias.
Steering & Handling For Peak Precision
The stock recirculating-ball steering system on the 1968 Mustang lacks responsiveness. Swapping it out for a rack-and-pinion steering conversion delivers sharper feedback and more precise control.
Power-assisted options are available, providing a modern steering feel while maintaining a clean engine bay. For purists, manual rack options are available, offering a more traditional but vastly improved response over factory setups.
Adding adjustable control arms, urethane bushings, and performance tie rods reduces deflection and ensures geometry is maintained under load. These upgrades translate to more predictable and direct handling on both twisty roads and highways.
Modification For Wheels & Tires
Factory wheels for the 1968 GT typically ranged from 14 to 15 inches. While charming in appearance, they limit brake upgrade options and tire choices.
Opting for 17 or 18-inch wheels strikes a balance between aesthetics and performance. Wheels designed in a vintage five-spoke style, such as those from American Racing or Vintage Wheel Works, retain the Mustang’s character while allowing for wider, stickier tires and modern brake packages.
Performance tires such as Michelin Pilot Sport, BFGoodrich G-Force, or Nitto NT555 provide superior grip, braking performance, and wet-weather handling, transforming how the car behaves under stress.
Interior Upgrades For Classic Feel & Modern Comfort
Stepping inside a 1968 Mustang GT should feel nostalgic yet refined. Subtle upgrades can significantly improve comfort, safety, and usability without compromising the original aesthetic.
Installing high-back bucket seats with modern bolstering improves driver support during spirited driving. Materials can be matched to the original vinyl or leather to maintain a factory look.
Upgrading the gauges to a digital-analog hybrid, such as those from Dakota Digital, adds functionality without distracting from the retro dash design. These clusters often integrate with EFI systems, offering real-time data with classic styling.
For audio, concealed Bluetooth-enabled head units allow for wireless streaming while preserving the dash layout. Under-seat speakers and discreet subwoofers improve sound without needing to cut interior panels.
Additional touches like vintage-style air conditioning systems, LED interior lighting, and sound-deadening insulation contribute to a refined cabin experience, bringing the 1968 GT into line with modern comfort expectations.
Exterior Touches & Modifications
The exterior of the 1968 Mustang GT Fastback is iconic. Modifications here should focus on refinement, not overhaul.
LED lighting upgrades, such as halo headlights and sequential rear turn signals, offer improved visibility while nodding to modern design trends. Retrofitting flush-fit glass and tighter weather stripping improves cabin insulation and reduces wind noise.
Hood modifications like functional scoops or heat extractors improve cooling, especially on high-performance builds. Lowering the ride height modestly with suspension changes enhances stance and improves aerodynamics, but should be done conservatively to preserve road clearance.
For those seeking more aggressive styling, adding GT500 or Bullitt-inspired elements, such as rear spoilers or side stripes, provides visual interest while maintaining historical reverence.
Electrical and Safety Systems
Electrical reliability is a common issue with classic vehicles. Upgrading to a modern wiring harness with blade-style fuses improves system safety and simplifies diagnostics. Systems such as the Painless Performance wiring kit are designed specifically for vintage Mustangs and support modern accessories.
Adding LED indicators, backup cameras, and even parking sensors can be done cleanly with today’s discreet technologies, enhancing usability without compromising aesthetics.
Modern safety upgrades, including three-point seat belts, collapsible steering columns, and even airbag systems, are available for restomod builds. These additions enhance safety for daily driving while maintaining respect for the vehicle’s classic nature.
The Revology Approach: Reimagining the Classic Mustang
At Revology Cars, the goal has always been to marry the timeless beauty of Ford’s most iconic muscle car with the advancements of modern automotive engineering. The result is not just a restomod, but a fully reengineered vehicle that delivers performance, comfort, safety, and reliability far beyond what was possible in 1968.
Every Revology Mustang incorporates advanced components such as Ford Coyote V8s and OEM-grade interior materials. The modifications discussed in this article represent a roadmap to achieving similar results on a personal project or restoration.
Yet what sets Revology apart is the obsessive attention to detail, the commitment to quality, and a philosophy that respects the legacy of the Mustang while delivering a product ready for the modern world. For those who seek the best of both eras, the Revology 1968 Mustang GT 2+2 Fastback is not merely a tribute, it is a transformation.
A Legend Perfected For The Road
Modifying a 1968 Mustang GT 2+2 Fastback is about more than increasing horsepower or tightening suspension. It is a pursuit of balance, a way to retain everything that made the original car great while removing the limitations that time has imposed.
The best modifications are those that serve the car and the driver equally. They preserve the Mustang’s spirit while unlocking a level of performance and usability that brings this classic icon confidently into the modern age.
For enthusiasts, collectors, and builders alike, the journey to refine a 1968 GT Fastback is a rewarding one. And for those who demand the absolute best, Revology Cars offers a reimagined experience that captures the soul of the original ,perfected for today, and ready for the road ahead.