HELP!!! Immediate Help Needed! Rear windshield clips

I just took the glass out of a 68 Dart with out a vinal top, and the clips were screwed on all the way around. The front and rear clips are the same on this car. My 68 had a vinal top and the rivits. Those clips in the rear look like different clips than the front. I'm grinding the rivits off and drilling holes to screw in new clips.
After your glass is in, put your inside trim around the window on. Do not tighten it up, snap the chrome around the outside window in, and then tighten the inside trim. I was told that is the procedure. The back glass is held in by the trim more than the gasket. If you took your window out by yourself, then you understand how that is possible.