For the money, replace the air filter, PCM, exhaust...then your well on the way...for me, money spent should translate into a car that has improved response. You can spend big $$$ in mods with little effect. Two schools of thought, 1 is mod everything you can but leave the block stock, the other is open her up and replace components. Frankly the GP format is flexible but not the best choice for a White knuckle, full on road racer. Dont get me wrong, I love my ride, but Im realistic as to my expectations. Enjoy your new wheels and welcome to one of the nets best sites for GP issues.