Patrick Motorsports took a 1978 Porsche 911 Turbo (930) and converted it to a 1973 911 RSR model. The drivetrain consists of a 993 twin-turbo 3.8 L and six-speed transaxle. The engine features Mahle MS pistons and cylinders, GT-2 oil pump, GT-2 EVO cams, RSR solid rocker arm system, and is controlled by a MoTeC M600 ECU. All together the engine package produces 600+ horsepower.
Source: Patrick Motorsports