Than I may be of help!
I believe that only GMC and Chevrolet used this particular axle. You can search vehicles from 1941 through at least 1953, probably a bit later. There are differences in the side gears, including some with rounded thrust washers and such, but the ring and pinion gears are the same and will fit so long as it is the standard single speed axle.
GMC also used 1/2 a dozen other makes of axles such as Timken and alike, but they use completely different parts.
When I rebuilt the rear on my COE I used parts from a 1941, 1946 and 1953 to complete one rear axle. I believe I saw this same rear end in a junk yard on a 1961-ish 1 1/2 ton, but I did not tear into the rear end.
Do you currently have a 5.43 or 6.17? There's a post somewhere on this site that lists possible donor models for the 5.43.
Hope that helps a little.
Jeff
