Going to do a stainless exhaust and have been beating the computor up looking for mandrel bends. Going to be a 3" system and only want to do it once. Found www.mandrel-bends.com. Their prices were exceptional when compared to many other better know sources. Went with all 304 tube and bends. Did a 3'' system in mild steel on the II back several years ago and have regretted not spending the extra to go stainless. If you're contemplating stainless check em out, I have no affiliation with them, just passing it on.