1974 Duster quarter window seal recommendations?

I documented my restoration of the quarter windows on my 70 Duster.

Are you asking about the piece in the last photo of my post here...
Pop Out Window Resto - Part 1

Also, in the first photo here...
Pop Out Window Resto - Part 2

Or, are you asking about the piece in photo #8 of the above link (Resto - Part 2)?

The first is from DMT, the second I purchased on EBay. Both good quality. I can get you the part number of the second item, if needed.
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?