Front drum to disk brakes conversion.

I'm planning on doing a front brake conversion using parts provided to me by the previous owner of my 74 duster. He gave me calipers and new seals, front suspension parts, matching rotors, disk/drum master cylinder, a -possibly wilwood- proportioning valve, and a few other irrelevant parts. I believe the calipers are kelsey hayes calipers; once I managed to remove the stuck pistons, I saw that 4 had to be replaced. I can't seem to find the exact pistons, so if anyone can tell me that would be great. (I'll photograph the numbers on the calipers.)

What I'm mainly wondering is where do I have to put the proportiining valve and do I need to change anything with the distribution block? Also, does the large section of the drum/disk master cylinder go to the rear or front brakes?

P. S. I'm aware the rotors may be too pitted to resurface and that the ball joints and bushings are shot.
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