Thanks for the information. I do not see any holes along the inside edge of the door openings, so I'm assuming the windlace retainers in my truck were welded in place (late '49). As for the headliner, I see a heavy metal brace that supports the top of the cab. It extends from the top of one door opening to the top of the other door opening. The metal brace is about 15-inches from the rear edge of the cab. Is this the headliner bow, or does the headliner bow screw into this roof brace? The roof brace appears to have holes in it, as if the headliner bow attachs to the roof brace.