Would that serial number be on the axle flanges or somewhere on the cast axle housing? I just looked at the axle housing and didn't see any numbers at all, but I may have overlooked them.
Here is the image that makes me think that the 1948 frame looks a lot different than the 1/2 ton truck frames from previous years.
Nick 1940 KC Model 1/2 Ton Pickup Project (with '37-'39 Bed and what we think is a '42-'46 Frame) Taos, New Mexico
