need more power, help!!!

i have a 97 avenger with nitrous, intake, header, highflow cat and magna flow exhaust, and all the little mods (wires, iridium plugs,)i need some ideas for more power and turboing it is OUT OF THE QUESTION, so if you have some ideas let me know, or selling some mods let me know (ie... intake manifold, apexi safcII, cams, cam gears, pistons,) anything that will help, thanks let me know

get a tuner chip and get it dyno tuned. even tho its outa the question... turboing is still the best way to do it with that car.

Did you go with a port and polished intake manifold or you just buy a short ram air intake. Get a bigger throttle body to maybe. The better the air flow the better the power.

you could bore it out too