what is supposed to go where my finger is pointing ? A trim piece, or a weather strip ? I does not help that I bought the car in pieces. Oh yeah, 71 GS
there is a rubber piece of weatherstripping that fits in that location. Where u find the piece (s), I do not know.
Here's a picture of one installed ... it's a clip on extension of the roof rail weatherstrip. Tailored ends + L&R
https://www.stage1restoration.com/product/qtr-glass-vertical-seals-rear/ is this the part that I`m missing ?