The "KR" in GT500KR stands for "King of the Road", and in 1968, it was. Powered by a 7.0-liter (428 cubic inch) Cobra Jet V8 putting out nearly 400 gross horsepower, the 1968 GT500KR was the fastest and most luxurious Mustang ever produced. For 1968, Ford ratcheted up its involvement in the Shelby program. Until then, Shelby models were built at Ford's San Jose assembly plant and shipped to Shelby's Venice, California facility for completion. Starting in 1968, all Shelby models were built at Ford's Metuchen, New Jersey plant and shipped to Ford supplier A.O. Smith in Ionia, Michigan for completion. The 1968 Shelby models were powerful and luxurious, and many collectors consider them the among the best built Shelby models in terms of quality. The Revology Shelby GT500KR captures the style and character of the original with improved performance, drivability, reliability, comfort, and safety.