In 2007, Ford, Carroll Shelby and Ford Racing teamed up to create a new muscle car that would slot between the Mustang GT and the bonkers Shelby GT500. The result was the Shelby GT, which featured a 4.6-liter, V-8 engine tuned to generate 319 horsepower. Visual differences include a rear-spoiler delete, a retro Shelby hood scoop, and silver stripes. First available only as a coupe, the GT received a convertible version in 2008. Vista Blue, the color that would become the signature hue of the nameplate, was added the same year. Axed before 2009, the Shelby GT returned for the 2014 model year with 430 horsepower in base form and 624 ponies as the GT/SC. Now that the 2015 Mustang is already upon us, Shelby revised the GT for the second time with updated looks, an upgraded engine and a host of Ford Performance Parts.