I am looking to buy a 95 Z28 Lt1 Camaro. Guy says it needs a muffler/exhaust and the head lining. I need to know if the muffler/exhaust can just be the basic that fits the 95 Z28 or if it has to be for the Lt1? It has tube headers also, I don't know if that matters. Sorry. Lol Also, is the head lining a pain to replace?