GT Premium! 400a Package, 5.0L V8 Engine, 6-Speed Manual Transmission, Enhanced Security Package, Active Anti-Theft System, Wheel Locking Kit, Adaptive Cruice, Navigaiton. Want to stretch your purchasing power? Well take a look at this attractive-looking 2015 Ford Mustang. This spirited machine can turn the everyday driver into a gearhead as they experience a whole new kind of acceleration and exceptionally potent power.