Gran Turismo 3 A-Spec

Still running with an Audi TT, improved to 315 HP, racing tires and wight reduction. With this configuration I can win easily the Audi cup (5 races), but it have not enough power to run on amateur and professional modes.

I have won the 4WD cup, and won a Suzuki Alto, wich I will use to run on lightweigth cup. I want to buy a mercedes to run on mercedes cup, but I can´t figure out wich one is better.