I've got the same problem now that I had all along in this restoration.
The parts listed in the pictures below go in the door opening in some
fashion but since I failed to take pictures as the cab was taken apart
three years ago, I'm at a loss as to how they fit. There are holes for 6
flat head screws in the wider pieces and nail holes in the narrow ones.
Also in the wider pieces is a notch for what I assume is the rubber bumper
for the top of the door. I think the parts go at the top of the door opening
with the notch to the back. However, the screw holes interfere with the
brackets at the corners of the door opening. Also, the nail holes also interfere
with the brackets. Is there a book or web site that shows this in detail?
There aren't any trucks in this area that I'm aware of that I could get a
look at to solve this problem.
If someone can tell me how these parts fit I will be forever thankful.