I have the same motor and let me tell you modding the 4A-F takes patience and alot of research. So far on my car I have built my own cold air intake out of 2 1/2 piping and a cone filter mount in the fender well. ($100) I also have a MSD Power tower (Converts to external coil) and Blaster coil ss ($75 w/ shipping) that I haven't installed yet and in the near future I plan on ordering a Pacesetter header ($250 w/shipping) and redoing the exhaust with 2 3/4 inch piping. ($150) I also advanced my timing a few degrees. ($Free) I figure with those changes I should be able to make a respectable 120-130 hp. If that is not enough I believe Flashmn is working on a turbo kit that is suppose to put out 170hp!!