I'm pretty sure that you can use a 6 lug spindle (any early 1/2 ton chevy or ford d44), knuckle and brakes.
I happen to have an extra set of ford knuckles, spindles and lock outs.
Let me know if you are interested.
The knuckles are off a 70's model ford supercab 1/2 d44 (could possibly be used for high steer).
I got these to run high steer and then I found a set of chevy FTK's so I won't be using the ford stuff.
They have calipers, and dust sheilds although the shields are pretty beat up and I do not know the condition of the calipers but you could use them as cores. $150 plus shipping if you are interested.