'95 Cavalier LS 4-door Mod's..

I currently own a '95 Cavalier LS 4-door.

I'm interested in "souping" it up a bit. Not visually, but physically.

All of the parts are stock.

Now, I don't want to rip out the engine and put something else in. We're sticking with the stock engine.

Price of part is needed, please specify CDN or USA currency.

Information on mileage change due to new modification is appreciated.

Information on HP increase is also appreciated.

Your the experts, help me out! From a 5 dollar part to whatever, I'd appreciate all information; Thanks!

'95 4dr LS, i'm gonna assume it's a 2.2L engine which came w/ the car stock..(all in american $$$)
performance - turbo kit-$2000, +70 HP; air intake-5-10 HP $100-200, peacersetters header-$200-400 10-15 HP, cat back exhuast-$200-300(single) $500 (dual) 5-10 HP; chip-$200 10 HP or 25% increase, fuel pump-$300 5 HP, supercharger-$4000 70HP

audio-what ever the hell u want, i sugest at least a couple of 12's

body stuff-body kit, fenders, spoiler, window tint, paint job......

all i can think of right now, there's a bunch of cheap interior stuff u could like paint the dash, neon lighting, a/c knob thing..yea

Thanks, !