Ford, Shelby, and Hertz collaborated to build 171 units of this special S550-based Mustang GT ... a special handling package, a body kit, gold stripes, 19-inch aluminum wheels, embroidered ...

It's hard to believe that the sixth-generation S550 Mustang debuted back ... Depending on the trim you went with, the body got beefier, with stuff like a body kit, and functional aero components.

Roush’s tuning package for the Mustang S550 also features a full body kit and a modified suspension, plus an upgraded cooling system for the engine. It also comes with a set of 20-inch wheels ...