Thanks all for the suggestions, unfortunately every place I have looked says the part is no longer available. GM parts direct web site only goes back to 1982 or 1984, I think it has something to do with the 13-digit VIN numbers on earlier cars. Fortunately, I was able to come up with the GM part number. It's possible I can repair the original molding, where the rubber has separated is actually out of view. I may try purchasing the Fairchild molding. In the grand scheme of things, this is not a big deal.