Charlie, the 1st thing I acquired was a '51 Axle hub to hub. It has a larger kingpin. It also had the same width for the spring mounts. However it had 5 lug rotors on it. So I used my 38 6 lug hubs.
I used tapered bearings in the 38 hubs. I had the face of the hubs turned to make sure they would be flat.
78 to 80 Chevy K20 rotors were used with Chevy 78 to 80 C20 calipers and pads.
I fabbed caliper brackets out of 3/8 plywood to get the dimensions correct. I had the brackets cut out of 3/8 steel.
When I put it together the hubs needed a 1/8 inch spacer to make them center in the caliper.
I was running 17 inch wheels with a bead lock and they fit over the calipers without issue. I changed to 16 inch wheels and had to do some grinding on the calipers for the wheels to fit over them.
