Can somebody give me the inner wheel bearing dimensions for a 1940 gmc 3/4 ton. I am trying to convert to disc brakes, and would like to cross reference to get roller bearings. I will be using 55-59 1/2 ton 6 bolt hubs. Steve at Buffalo said it would be eazier to use them.

Guess I need the outer dimension for the 1/2 ton hubs to.

One other ? Are the king pins the same for 1/2, 3/4 and 1 ton trucks? most companies I notice only list for the 1/2 tons.