White 2007 Ford Mustang Shelby GT500 RWD Tremec 6-Speed Manual 5.4L V8 DOHC Supercharged 5.4L V8 DOHC Supercharged. Reviews: * Youâll like this car if youâre looking for a sporty, four-passenger convertible thatâs a thoroughly modern take on a classic model. In the GT trim, the Mustang offers more bang-for-the-buck than pricier models from BMW, Nissan and Audi, all wrapped in a package that smacks of the red, white and blue. Source: KBB.com