Good question but sorry I don't know the answer. Not the first time this has been thought of. In 48-50 at least the front brakes were the same for 1/2 ton & 3/4 - 11" x 1 3/4" Huck-style. So the drums are the same diameter but the hub is larger & bigger bearings on the 3/4. The center hole in the wheel is bigger too. The 6 lug is a 5 1/2" bolt circle and the 8 lug is 6 1/2". I don't know if there is room to have the 3/4 ton hubs/drum re-drilled to 6 lug. If this works it will only on the front. No way on rear because of the full-floating axle hub. Maybe somebody else will have an idea. Good luck.
