I have a 88 GXL non-turbo. My current mufflers are 2 ractive cannon style mufflers. I need to get my piping redone and i was wonder what size i should use underneath and what cat or res i should use??? Basically what exhaust i should be using? Thx.

 

If you want good top-end torque, go with a 2.5" piping all the way from the header to the mufflers..straight pipe. For great midrange go with 2.25", and for bottom end, I'd go with 2"

 

cool sticker

 

i have 3 1/2 single and then it splits into dual 2 1/2
here r soem pics of it from the back and side
http://www.geocities.com/toughguy69696969/

 

hey canadian, do you have headers? How much change could you notice once you got the exhaust? I am gettin exhaust as soon as my intake arrives. Thanks.