The body is much the same as the 41-46 Chevy's so the problem area are most likely also the same.
Look at the lower part of the cowl area where the front fenders meet the cowl most look like swiss cheese. If you can lift out the back of the front seat so that you can see the area under the rear window they all rusted in this area. As rustednuts noted above,the area where the fenders meet the running boards front and rear. Door bottoms and under the fuel tank under the seat. Another bad area is in the windshield post where it is joined to the roof section. The dash just screws so they are replaceable without to much work. Get all the parts you can find with the truck. An let us know how you proceed. If you need some pictures of some of these areas and what to look for let me know and I will email you some of my donor cab and also the one I am working on (It's a 41 Chevy)
