Exhaust Systems....Researched

[dannydavi]

thank you very much for your input, helps me understand a lil better, but is cat back basically everything is stock except the cat converter and everything behind it, cause that's what it sounds like haha, and are headers and downpipes the other exhaust upgrades you can get, or are there additional? thanks for any input guys. im being thorough cause im getting ready to do it in a few weeks