ummm...with 100-300 dollars to work with on performance mods you could possibly get some Denso Iridium spark plugs, they supposedly add 2-5% on acceleration...they run about 50 bucks for a set of 4 though....umm, maybe some NOLOGY spark wires - they've been known to add HP, they're 150.00....and lastly, maybe get a high flow catalytic converter or just get a test pipe put on (straight pipe where the cat is supposed to go, just don't get caught....i don't know if you have emissions testing or not?).....that's all i can think of.....that will all come out to about 300.00....