rear window rubber

In the 80s I bought my 36 plymouth-----this car has a rear, swing out window,,,the rubber was bad,,,,in the trunk was, what looked like a replacement but it turned out to be too big,,,,I did get the proper one but can't remember where,,,this looks like the same set up and manufacter,,I think it may be 37 mopar maybe plymouth,,it is a high quality piece and is new it is a one piece, vulcanized----,,,,,may be for another mopar,,,,,,I measured and it would fit in a window opening of 55.5 inches-------please contact at------------bobnroman@yahoo.com