Windshield Gasket

Does anybody have a source where I can get the rubber gasket (some call it molding) for my 73 Dart Swinger 2DrHt?

I contacted numerous places, they all list them (different part numbers though) but everybody has them on back order; I guess they all come from the same manufacturer.

So if you have one for sale or you know somebody that actually has one, it would be of great help to me.

Thanks!