Burdar is absolutely correct these are the up stops for E-body convertibles. Below is a picture comparing a convertible quarter window on the right and hardtop on left. On the convertible the stop contacts the hose around nub on the diecasting while the hardtop up stop is the plastic bushing screwed into the glass. I'm not 100% sure what the hardtop body piece of the up stop looks like looks like but I don't believe it attaches at the same place as the convertible because the convertible glass has two holes in it so you can adjust the stop and the hardtop glass does not have these.
Last edited by cudaize; 06/04/18 09:41 PM.