120 whp per cyclinder would be 480 total. IMA Motorsports has just finished a 951 with 600+ HP. I saw the dyno readout. It does use a 968 engine and gearbox as the base. He has completely rebuilt the engine with a turbo using custom headers, exhaust and cams. It also has custom pistons and connecting rods, Tiilton clutch assembly and flywheel alsong with Motec engine managment system. It even has a 968 rear hatch. I won't tell the cost but it can "chirp" the tires in 6th gear. I think it might beat the German car. He also has built a 951 race car with 500+ HP. Check out the web site IMAMOTORSPORT.NET.