My first turbo car was a TTA and I have owned 5 GN after that and just recently purchased a TTA. My feelings are that the TTA in every respect is a better car. In stock form the TTA is a better performing car as far as suspension, brakes and motor (heads and intercooler) than that of GN's. The prices are the same for like mileage cars therefore the TTA is a far better value. Plus a white car is easier to keep clean looking. I have just owned my last GN
kirk