Installed the front disk brake conversion lit. The interference problem previously mentioned was resolved with the spacers included in the kit that secure the bracket away from the spindle surface. Unfortunately the kit does not include any instructions but with the spacers installed the bracket mounting surface for the caliper is parrallel to the rotor surface. The spindles needed to have the upper mounting holes enlarged from 7/16 to 1/2" which doesn't sound like much except the spindles are hardened so they can not be drilled.
I did remove the king pins and the pins and bushings all look good, but now I need to find a source for the caps that go into the axle above and below the pin to prevent the grease from leaking out and letting dirt in.