This Challenger is the world's first supercharged modern Challenger, making 600HP with the Speedfactory Stage 1 Supercharger package. Speedfactory features: Vortech V3 supercharger, Speedfactory custom tuning, Richmond 3.55 gears, KW suspension, JBA catback exhaust, Boze forged alloy wheels, Nitto tires and the Speedfactory Signature package.