Originally Posted by SophiaZ

OP, I suggest you keep it. I've heard from a few Z owners having to put all stock parts back on incase of serious problems and having to take it back to dealership for the fixins(?) I was looking at selling my stock exhaust too but for warranty issues, was told to keep it just incase. PLUS..you wont get much for the stock exhaust (metal prices are down right now.) Safe bet is...just let it lay around for a bit.