get an intercooler and run ~3.2 pulley on it from the get go. with headers and rockers you could easily run a 3.0 with decent timing. the intercooler is the best mod you can ever buy.

if it were me though, i would put a cam in it as you dont have to pull a bunch of crap to install an intercooler later. with a cam you have to disassemble a lot of stuff to do that with the motor in the car.