So i know its only an oz rally but its what i got and i have to make peace with the fact that its not an rally art or a evo. with that in mind what is the best (realistic) mod i can do to get as much power out of it that i can. with out getting a turbo.

First do the exhaust, get the cat converter out, run a pipe straight to the muffler. After that nice intake, and a speed chip. With all that you could get almost 75hp extra.