Few muscle cars are as iconic as the 1967 Shelby GT500. The big-block-powered machine was one of the fastest and most powerful cars of the era. Still, by today’s standards, the car is archaic, a period piece that looks and sounds fantastic but drives like an high-octane humpback whale on wheels. Revology, the company behind this restored and updated GT350, will debut its redone GT500 at this year’s SEMA show in Las Vegas.