Ok, I was in the same situation as you. I pretty much used the service manual to figure this out as well. It certainly was frustrating and best done with a second person to hold things in place. Unfortunately my pictures aren't the best for the door glass but I'll try to explain and can get more pictures from the installed units. My car is a 1973 Barracuda. I can probably try to explain the pictures you have.
The quarter glass has one "large" glide assembly and a regulator. The glide assembly has a single plastic slide that connects to the glass. There is also a square white plastic glide that attaches to one end of the regulator that slides in the horizontal fixed metal guide attached to the inner structure. There is a red plastic up stop (plug like piece) held into the glass by pressure from the inserted screw. Finally, there is a black rubber stop that is held onto the track at the bottom within a screw on assembly. This assembly has two screws securing it to the guide.
I know that my descriptions may not be ideal but if you look on E-bay you may see some completed NOS items and it will make more sense. The door glass has far more wear parts so I'll try and gather more pictures.