If you look carefully, the section where you bolt the bracket Is in angle comparatively to the a body hangerlooks a lot issin angleike theses repros, I have some stock ones on my dart, I will see if I can read the part number.
Mopar Parts | MA2483 | 1968-74 Mopar A-Body Exhaust Tip Hangers Pair | Classic Industries
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