Dave's suggestion of using a 1/2 ton front axle on a 3/4 or 1 ton truck is OK if you don't mind having 5 or 6 lug wheels on the front. But 3/4 and 1 ton disk brake kits are available from at least 2 sources..
Very true Bill. In my case, I had decided to swap the rear axle as well, so the move to 5-lugs was easier for me. If I had been able to figure out how to put 3.73 rear gears in my original axle back when I was restoring the truck, I would have kept that axle.
