Yeah when i bought my GTA it already had a whole exaust on it, but the cat has been gutted (not my doing) and the catback is a 2 1/4 and im looking for 3 inch, but ive heard on my friend tims car how the hooker sounds and its awsome. and he has a catco cat on there too but stock manifolds as of right now, hes getting supercomps soon, but either way i have the edelbrock headers, so i will go with a 3 inch catco cat, into a 3 inch hooker catback

hopefully when im done with it i can send in a sound clip or something

 

Mark will be thrilled.

 

sure just hop on the bandwagon