ok so I want to get a catback for my camaro its a 1994 z28 has a lt1 with a manual tran...how can I tell if the one im getting is better then the one I have? I think the one I have is stock its got the duel and its the black heads on it

 

pretty much any aftermarket catback will be better than stock. i would suggest magnaflow part# 15620.

 

Stock is 2.25" and most aftermarket are 2.5" or 3", some even 4". Those will all be better. I'd look at hooker or magnaflow. There are others, but they can get more expensive. I only have Borla because it came on the car.

 

I agree...the Magnaflow is a really nice sounding catback. Plus, it is an all stainless steel system and not very expensive at all.