Mandrel Bent Exhaust

[Dashman]

That's also what I said. I wanted the 304 for road salt corrosion resistance, what this guy said is, Magna Flow uses 409 and only show trucks use 304. What I figure is the 304 is harder to bend with more chromium and nickel, and would require a heavy duty bending machine not the lesser expensive type. I'm willing to go with 409 stainless steel to just get it done. The welded up pre-bent tubes on my '81 K20 are 304, and the bent front tubes are 409. A person can see my tailpipes, but not my front pipes. Both stainless steels look in good shape after 20 and 10 years for the 304 and 409, respectively. No offense intended, but I need a bending shop and bender person *not more advice on type of stainless steel.