Looking for the way of old school

67 Dart sedan. I fixed the rear lexan glass by gluing them into the frame with silicone.Then removed the regulator and anything else in there.Installed aluminum angle riveted to support the lexan.
Passenger door lexan same way with a piece of aluminum angle riveted inside to support the lexan.
Driver door lexan riveted 2'' strap to bottom using extra ratchet strap material. Seat belt material can be used also.
placed snaps for when window was up at the base of the door. Also a snap when the window was down to keep the strap in place. Hardtop cars use tubing around the perimeter of the door lexan, usually using screws or rivets.
Thank you for all the detail