LOL. anon is an idiot. you can do i few simple things to boost your horsies... weight has nothing to do with it, and you need to make a few mods to handle nos.. lol.
1) Cold air intake $70 @ shucks
2) headers $300ish
3) exhaust system... $600... not a muffler tip. a Cat-Back exhaust/high flow
4) performance fuel pump
and to have your car just have better performance get new plugs/cap/rotor/and wires. and run premium fuel...
get a turbocharger/supercharger? a little spendy though