I think my 216 is either 1 7/8 or 2". I took it to the local exhaust guy that does older stuff and he did a great job. I asked him how long it would take to get the parts and he said that he would have it done in a couple of hours. He had everything on hand. One thing though, he used a doughnut gasket and the truck previously had been put together with a flat gasket. I think that his way was right.

1951 GMC 1 Ton Flatbed -- It is finally on the road and what a great time I have driving it!
1951 1 Ton Completed

My Chevy Master 4 Door is on the Road!