It's generally reffered to as the "up-pipe". I bet someone will chime in who is selling a used stock one. Also, if you like, there are aftermarket ones for sale. They are generally larger diameter, and with smooth mandrel bends instead of the restrictive crimped accordion-style used on the stock ones. I don't think youll get a really noticeable performance increase from just an up-pipe, but its probably better than stock, and every little bit helps. I think ATR makes one, and i know jaysGN.com makes a very nice one, with a flexible middle section for easier fit, but its kinda pricey. But if yuore not looking for an upgrade, and wanting to keep it cheap, find someone with a used stock one... shouldnt be too hard to find.
