I have a 5 inch stack from a big rig, but dont nkow what it came off of. It is a 5 inch diameter outlet but not sure on inlet. Still has muffler and heat shield on it with good chrome. As expected, there is a little black where the exhaust goes out and a little burned off chrome. It is in nice shape and would look great on someones truck. $50 OBO Will get pics soon!