"slp loudmouth and cai, big difference over stock "
Ditto here, plus rims and tires, BMR STB, etc (in sig.) Then tint.
I am leaning towards the SLP headers now though I have always liked their products. Especially if I can get a mid length high flow cat version in the high 800 range!

It's something I am not rushing into because prices are dropping and the smog PoPo are itching to fine here.
Oh yeah, if you do change your intake and exhaust (a good start) then you will want a tuner/programmer and for this I suggest the Diablo Predator.