The first Lancer Evolution used the 2.0 L turbocharged DOHC engine and AWD drivetrain from the original Galant VR-4 in a Lancer chassis, and was sold in GSR and RS models. This engine was also used in the Mitsubishi RVR with the Hyper Sports Gear trim package, and the Mitsubishi Chariot Resort Runner GT. The RS was a stripped-down version that lacked (power) windows and seats, anti-lock brakes, a rear wiper, and had steel wheels to weigh approximately 70 kg (154 lb) less than the 1,238 kg (2,729 lb) GSR, ready for racing or tuning. The RS version was released with a mechanical plate type rear Limited-slip differential (LSD). The GSR came with all of the conveniences of a typical street car, including a digital screen climate control system. It came with Mitsubishi's 4G63 engine producing 247 PS (182 kW; 244 hp) at 6000 rpm and 309 N·m (228 lb·ft) at 3000 rpm. 5,000 of the first generation Evolutions were sold between 1992 and 1993. Top speed was 228 km/h (142 mph). The GSR version of the Evolution I was the only Evolution Lancer released with a Viscous Limited Slip Rear Differential (VLSD). The subsequent Evolution Lancer models all featured rear mechanical plate type LSD's.