Do you know which length you need? It would also help to know if it is for a passenger car or for a commercial vehicle; the holes for the lock mechanism are not in the same locations. scardilla77034@yahoo.com
INIT1- I agree with Andy. I have always used 1.5" exhaust pipe. It takes a minor amount of work to have it fit right but the end result is a product superior to Henry's for about $10. PM me if you want directions and pictures.