I agree with those that worry about too many classes. But it does seem like a really good idea to have two classes of pro10's. the slower of which would have the GT style bodies and would appeal to those who care most about realistically cool looking cars that are somewhat easier to manage and hopefully less costly to campaign. The faster of which would be for those who care only about speed. Personally, I absolutely love the 10.5 motors since they are fast as hell and yet they don't get smokin hot and are not prone to shutting down the electronics like the lower wind motors do. If I were king, we'd run 10.5s with the LMP bodies and settle on either the 13.5 or the 17.5's for the slower class with the GTP bodies. Heck, if car count was an issue, I could even go for running them all together and scoring them separately..........just as they do with the real sportscars.