Unfortunately that original rubber column isolater is there for a reason...Did you get rid of the rubber/poly K frame isolators ??? If not that coupler is'nt going to work...Anyhow...I have the heat ring still in place around the factory steering coupler on the 73 and the headers have'nt cooked it yet.... ...Not an easy fix going any route other than stock...If the price of that original coupler has you ...I know guys have used the aftermarket brand x rag joints and doubled them up...