firstoldsmobile

Hey out there. I have an 80 442 (a real one). On the 3/4 side window, there is a bracket at the top and the bottom on the inside. From there does just the glue hold that window in?
I know on a 81-87 the side quarter window it is held in with speed nuts. Obviously there is the window trim on the outside, where a 81-87 does not.
Thanks for anyone's input.