Based on the new 5.0-liter V8 Mustang GT, the RTR package boasts a comprehensive list of upgrades, including new springs and shocks that drop the Mustang 1.5 inches over specially designed 19-inch RTR wheels each wrapped in Falken FK452 high-performance rubber. A larger rear sway bar aids rotation and cross-drilled and slotted rotors should keep things cool when hauling the massive coupe to a halt. Under the hood, the only major modification is a K&N high-flow air filter