Thanks Greg the 56 GMC is home now it was a lot shorter than your 54 COE road nice on the trailer in fact it is still on there.
It is a 1 1/2 ton and has 10 lug on 7 1/4 hub piloted with 5 1/4 center bore 22.5" wheels and 9.00 X 22.5 tires
The rear end looks like the same one that is in my 71 one ton dulie every thing is certainly a lot lighter duty than my tow ton trucks.