Parts Identification Help

[Castiron9]

Working on the B.B. and I believe I misplaced one of these exhaust "thingies"...One was on the other side so I suppose that you have one on each side of exhaust manifold..Local parts store said I had to go to dealership???????????Any help would be much appreciated..Like what they are called and the purpose of them..Also posting pictures of two brackets that My neighbor gave me when he saw me working on my truck...I know he had a B.B. also at some time and these brackets came from his parts stash..Are they worth anything and of any use to any one..Thanks.................

[jeffspower]

When I find one of those rotted or missing, I make a run down to the exhaust shop & have them make a new one. They can expand a piece of pipe out to fit in the donught just right. They keep the donught from collapsing & burning out.

[Castiron9]

That's what I was thinking of doing but was not sure...Thanks .......................