Here is my 1967 Chevelle

[Kaboo]

I'm making my all stainless exhaust today. I made the flanges out of 3/8" stainless. The exhaust tubes are 3 1/2" and I used a 4 1/2" tube for the outer body of the muffler. I bent the turn downs on a 5.25 radius and I will cut them later today. Hope to have them all welded up and will post pictures tomorrow.