Found a possibility through CL Laurence, and yes, it's advertised to be for the Ford 2 piece weatherstrips. But its not quite the same profile, a little wider too. Big issue is they sell it in 200' rolls...
Thanks! :thumbsup:
I wasn't sure that profile would fit the factory gasket, since the original strip is flat bottomed.
But it looks like that's as close as it gets now.
A retired friend is going to contact the glass shop he worked at, knows they had some back then but it's been a while and they tend to throw out slow moving/obsolete inventory.
Looks like it's time to rob my "swear jar"!