Top 20 Muscle Cars of All Time

16. 1968 Shelby Mustang GT500KR 428 Cobra Jet

One of the ultimate Mustangs, the 1968 Shelby Mustang GT500KR was a highly sought after vehicle. The KR in the name stood for “King of the Road”. The engine was a 428 known as the “Cobra Jet” and had a power output of 335 horsepower. Total torque output was 440 lb-ft. The hood featured dual inlet hood scoops to increase ram air delivery, factory hood pins, and vents to dissipate heat under the hood. With so much power under the hood, the vehicle came from the factory with a padded rollbar, to add additional safety. Vents on the sides of the vehicle were used to cool the brakes when driving at high speeds. Both a hardtop and convertible models were available from the factory.