That's right--these Ford Racing 2007 Ford Mustang GT 500 hp supercharger kits produce a whopping 500 hp at 5,800 rpm with 470 ft.-lbs. of torque at 4,200 rpm. They put out those amazing numbers with just 11 psi of boost on 93 octane gasoline. The kits include a roots-style supercharger, drive belt, complete air-to-liquid intercooler system, dual fuel pumps, fuel pump driver, and wiring harness. The Ford Racing 2007 Ford Mustang GT 500 HP supercharger kits are 50-state legal, so you can use them no matter where you're located.