Well its not a complete exhaust but i got new flex pipes and cats and got rid of the center muffler so its just piping from the cats to the muffler in the back. I left it 2.25 since i didnt have enough cash to open it up to 2.5 and i left the stock muffler its sounds really good but when im at 3k rpm it rattles is that just the stock muffler im thinkn of just doing a magnaflow i have a video but i dont know where my firewire cable is.