Bill, I am not certain since I received my truck largely disassembled, but I did my truck as shown in the pictures. I did this based on another first class restoration of a '37 that is local I can examine. Also, my '42, which has very similar interior panels, is done this way.
The windlace is one piece around the entire perimeter of the door. In the forward area of interest, the windlace above the dash is held by the small panel that covers the A pillar. Below the dash the windlace is behind the fiberboard kick panels, all the way to the floor. I did have to trim the windlace at the dash as there is no space between the dash and A pillar to tuck it in.
Perhaps someone else can chime in who has a survivor, and knows how the factory did it.
