ill take some of the free hp. umm, try running some $2 dryer ducting into your airbox and down to the bumper, to act as a ram air/cold air. Umm, get a CHEAP header, like pacesetter, and a 2.25" exhaust. u can save the exhaust for after the swap that way, and it will only cost u like 400 bucks total. also remove cat, and advance the timing.
Ive actually heard some ok things about the power gains pacesetter gives from 2 of my friends, they are crappily made, the paint will go in like a week, but it's still alot better flow than stock. my friend said he loves his, and eventho id never buy them, its not a bad choice for like 180 bucks.