I have converted Huck to Bendix but its been years. It wasn't that complicated and it was before I had all the shop equipment I now have. I think it was a simple matter of drilling 5/16 holes to accommodate 3/8 bolts. Lots of 3/4 tons get scrapped. It is worth looking at old 3/4 tons. A few years ago a friend of mine discovered almost new drums on a 3/4 ton cut off and made into a trailer. Making trailers out of 3/4 ton used to be popular because of the full floating axles and the possibility of either 15" or Ford 16" wheels.