I asked the same question, can be seen on page 4 with several good responses like yours.
In my area its hard to find a wrecker with cars and trucks from the 60s and 70s, saying that though I'm off right now to a yard I was told about to have a look see, then I could order a new one when I feel satisfied. Seems that most of the jobber parts guys either can't or don't want to suggest an alternative, I get the best ideas at this website, good luck