I've looked at 2 cars you plan to put into ITR, the S2000 Honda @ 237 hp and the Porsche 968 @ 236 HP. From what I gathered you thing these car already highly tuned from the factory. I know Porsche and there is more to gain with this car. With headers, exhaust and blueprint & balanced engine I bet your looking @ 260hp +. I thing the same with the Honda. Have you factored this in?