The Shelby GT500’s release in 1967 signaled a wave of change for subsequent high-output Mustang production. While the GT350 once stood as the premier Shelby performer, it would slowly begin taking a back seat to the more robust GT500. This would be further exemplified in the year to follow, when the GT350 would have its output significantly cut, as its 289 cubic-inch powerplant was removed as a standard offering. For all intents and purposes, the GT500 now stood head and shoulders above all other vehicles within the Shelby line.
