I'm doing a front conversion from drum to disk brakes, and was wondering if the steering knuckle from the drum will work with the disk. Anyone tried it?

It is not a direct swap. The drum part needs a bit of machining to work with the disk brakes. Search this site for details; the boss that held the drum brake anchor pin needs to be cut down and the hole needs to be tapped deeper.

if your asking about using the drum brake spindle with a disc brake kit, the steering knuckle stays the same. if your asking about the outer tie rods they are the same also. if your asking about converting your drum brake spindles to stock disc the above post is correct.