Sounds like a neat truck that you have! Can you post some images? I have a '37 1/2 ton also, I'd be happy to provide details as needed. I'm 76 years old, retired carpenter, with an Air Force connected disability ( Vietnam era). I bought my truck from a guy in California about 20 years ago.
Tom
P.S. Do you have the center mounted bumper guard, it mounts differently than the others.