Besides for the turbo components and exhaust, what are the differences between the TT and N/A? I don't want to have to put a lot of money into the suspension to get it up to TT quality. Also, I'm looking to get either an RX7, 300zx tt or supra. Does anybody have any good/bad comments from experience to aid in my decision? I know how common it is for the Wankel to crap out in the RX.