What whould be a simple add for more power?

[Lets Drag]

hey guys, i gotta 1988 mustang GT with a 86 model 302 in it. It has a "E" cam at the moment. and thats all that is done to it... When i got the car, the rear in messed up and come to find out it had a 7.5 rearend in it! which sucks ass! then forth gear sincro went bad. had to pull it out and found out that it had a four cylinder 5 speed in it... Its gear low as hell.. 373 gear with a 4 cylinder tranny... comes out to about a 411 or somthing idk... but anyways i was wonderin what could i do to the engine other then a cam to get more power... keep in mind its all stock except for the "E" cam that is in it now...

give me some ideas =)


Thanks,
Lets Drag