Help removing my rear window

Ive searched and haven't seen anything for my 72 swinger. Ive never taken a window out that I needed to re-use. I don't care about the seal because im going to replace it with a new one. I need to get the window out to repair the notorious rust at the lower corners. Also can the rope trick work on this window or not. I was in the military and when installing windows we used the rope trick with either grease or a butt ton of soap .Not going to use grease on the car if your wondering. haha