1968 dart windshield and back window gasket

[Bankshot1966]

I am looking for any ideas on where to find these seals, I have checked many online parts stores all out of stock, even considering used seals if I can find good ones

 

[ocdart]

67gtx has a windshield gasket advertised for a 'Cuda fastback, but it's the same one a 2-door hardtop Dart uses (#690). Don't know what he's asking for it.