Do you mean the interior door liner, or the entire door out of fiberglass, or hold on do you mean the actual glass for a door? I'm confused
sorry the actual glass in the door.
to do away with the vent window in the door.
Been some articles on doing this in either Classic Trucks or Custom Classic Trucks in the last year, you'll have to make a pattern out of hardboard first and take that to the glass cutter and adapt one of the poer window kits to work in your door.
Thank you jalopy45