Yeah, I was referencing the crashed Carrera GT, which is indeed a Porsche V10, derived from the RS Spyder LMP2 cars they ran(and won with) back then.
https://en.wikipedia.org/wiki/Porsche_RS_Spyder
Joel, it's your car, but I would try to decide max wheel/tire size in keeping with suspension and brakes you'll use before you go too far on the power spectrum. If you can't put the power down, what's the use besides bragging right?