n.o.s. exhaust tip hanger

The pic posted by the OP has a tang (bent up) closest to the vertical bracket where you bolt the hanger...also, the OP's pic has 2 hollowed out spaces on the base of the rubber. The OP's pic is nothing like the one's from Classic Industries.

Treblig

They are not an exact copy, but look like they bolt in and do the same job as an original.