I need to repair a section of exhaust that just has a bad end. The problem is the bad end originally had a expanded end for slipping over a muffler. I can find coupling ends made out of mild steel, but I would really like for it be made from stainless since the rest of the system is made from it. Anyone know if a source where you can buy 2.25" stainless coupling ends or a 1 foot section with a expanded end.