(4 photos of a 2025 Carbonized Gray Mustang GTD Fastback) New for 2025 is the Mustang GTD street-legal, track-ready supercar. Features include carbon fiber body panels, magnesium wheels, semi-active suspension and hydraulic control system viewable through the rear window, and much more. Under the hood is a 5.2L V8 engine targeting more than 800 horsepower.
