1974 Duster quarter window seal recommendations?

Yes, I'm going to replace the piece in the last photo of part 1. If you had a part number, that would be great. You also mentioned polishing the glass. My glass has some hard water stains on the outside. Is it very hard to remove this or polish it out? Never done any glass polishing before. Whaddya think?

Mopar A Body 70-76 B Body 68-70 Rear Pop Out Window Hinge Set 2932230 reproduction

Looks like they are having some supply issues with these. Call Jim Fillmore at DMT, he is a good guy and a great resource. He will steer you straight.

As for the glass, polish away. If it's hard water stains, maybe try some CLR on it first. Grab one of those green/yellow kitchen scrubbies that are soft on one side and scratchy on the other. A little elbow grease should get them out. For polishing, use a cutting compound first and then a polish. I've always used Meguiars 105 & 205 (in that order), and have always had good results. Just a dab will do, don't overdo the 105! Use a pneumatic or electric polisher, hand polishing probably will be tough to get anywhere.