16. 1970 Shelby GT 500
By the early ‘70s, Ford had numerous performance versions of the Mustang and Shelby models, but they became outdated. So their cars’ demand was not as much as before and production numbers were even smaller.
However, the 1970 Shelby GT500 was still a fabulous classic muscle car that came as coupe and convertible. Under the hood was the 428 V8 engine, which they conservatively rated at 335 HP. But it really produced more than 400 real-life horsepower. In the end, Ford only built 789 1970 models.