Updated for 2010, the new Ford Shelby GT500 is their most powerful SVT produced Mustang ever, with 540hp. This power is supplied by a supercharged and intercooled 5.4L DOHC engine, redlining at 6,250 rpm. Applying this to the rear wheels will be the six speed transmission that is paired to a new twin-disc clutch. With zero to sixty times rolling in at just over the four second mark, the new GT500 will most definitely plaster your butt to the seat back.