I am thinking exhaust, CAI and tuner and not just b/c of the wonderful suggestion up above. I like the sound, a little more HP, and I want chrome tips. I love the sound of an x pipe cross-over, but I am not sure a catted X and SLP will be tolerable. I am 24 it's not like I can't handle some loud exhaust, but I want to be able to hear and talk on the interstate too. I know there are entire threads on exhaust, and I have read them. Do you guys have a preference on a catback with a catted X? I really don't mind a little race car sound.