I have an 86 GXL and am looking for some cheap and simple modifications to gain more horse power.
So far I have a cold air intake and am putting on a pacesetter header and pacesetter cat-back exhaust.
How would I hollow out my Cat? And would that give me more power?

 

not worth the time to hollow in out just get a straight pipe to put in there.. there is a thread here called :how to make a beefy n/a" it has tons of stuff for n/a ppl go check it out!