Depends on if that would be stainless steel piping or not. The ws piping is steel, only the muffler is ss. If you can get the exmag muffler and get 2.5 inch ss piping for less than the cost of the rsr catback, then there you go. If I could get stainless steel piping put in for a good price, I would go with that and the exmag, but that is just my opinion, and that is only because the ws doesnt have ss piping.