In a somewhat surprising development - I've managed to find both right and left vent window frames in NOS condition. They're complete with felt and vent window seals. The glass will have to either be moved from my existing frames or I'll source NOS glass/frames.
I guess it's one way to ensure that the felt pieces are correct without the supreme frustration of using shit quality parts several times...I am still planning on buying some of the WW parts to make sure I give them a shot before exclaiming that there are no decent repop parts out there.
I think I'll still build up the doors from the 65 - for both the practice and the right side mirror. Seems like I'm going to have time on my hands for a while so I am going to need something to keep myself busy.