along with a luggage shelf replacing the rear seats. Cloth covered sports seats, 17 inch wheels and M030 Sports Suspension were fitted as standard. The logo "RS America" was written on the deck lid along with an "RS" logo in front of the rear wheels. Deleted to save weight were power steering, cruise control, powered side mirrors, air-conditioning, sunroof and radio, although the air-conditioning, sunroof and radio as well as a limited slip differential could be ordered as options. The RS America was listed by Porsche as weighing 2,954 pounds (1,340 kg), 77 pounds (35 kg) lighter than the weight listed for a stock Carrera 2. The standard US Carrera 2 engine and gearbox were used, however the turbo brakes and seats (only in cloth) were used. Carrera RS 3.6 Engine Engine Design: Air-cooled or oil-cooled, horizontally opposed (flat), dry-sump lubrication, rear-mounted engine Displacement: 3,600 cc (220 cu in) Cylinders: Six Bore and Stroke: 3.94 x 3.01 in (100.0 x 76.4 mm) Compression ratio: 11.3 : 1 Fuel/Ignition: Electronic fuel injection, DME controller, twin-spark with knock regulation Crankshaft: Forged, 8 main bearings Block and heads: aluminum alloy Valve Train: Overhead cam, one per bank, double chain drive Power: 191 kW/260 hp (SAE net) at 6,100 rpm Torque: 312 N·m/230 lb·ft at 4,800 rpm 964 Cup Based on the Porsche 964 was the 1990 racing version for the new Porsche Carrera Cup. In addition to an increase in output by 11 kW to 195 kW (265 hp) the 964 Cup had a welded roll-cage, a modified chassis set-up and the ground clearance was 55 mm lower than on the standard version. To reduce weight: the interior and the sound-proofing material was removed. The gear ratios were modified and it had non power-steering. The vehicle did have a catalytic converter and an anti-lock braking system (ABS). In 1992, the 964 Cup had a major revision. The vehicle now had the body from the 964RS and the engine now produced 202 kW (275 hp). Another major change was that the ABS could be switched off in the event of emergency braking or whilst the car was going backwards. The vehicle now had 18 inch magnesium rims, which replaced the aluminium rims. The car was lowered by a further 20 mm. Technical data Turbo Turbo 3.3 Porsche introduced the 964 Turbo model in March, 1990 as the successor to the 930. However, they hadn't