Door skin removal (72 Duster)

Without welding? IMO that's not going to happen.

If it were me doing it, I'd take a cut off wheel and slice the doors in half, legnthwise, trying to cut under where the door weatherstrip goes. Use a marker, draw lines. Do it exactly the same on both doors keeping in mind to add one blade width to one side when cutting/marking. Then reassemble the good pieces n tack/butt weld away.

Hope this helps. Eric