Thank you so much for your advice. I was able to buy new front shoes, so I used those. I washed the rear shoes with a lot of brake cleaner and then used an abrasive plastic disk on my air tool and scrubbed the shoes nicely. They looked brand new. The drums, both front and rear seemed to be brand new! So I cleaned them thoroughly and used some sand paper to roughed them up a little inside. I replaced all of the wheel cylinders with new ones. I replaced all the rubber hoses and the master cylinder. I had to bring the outlet of the 3/4 ton master down from 1/2-20 to 7/16-24 so that it would mate up with the existing brake line. I used dot 5 since all rubber was brand new. I think this brake job came out very nicely!
I found the plate you are talking about. Somebody didn't take care of it properly when they did the restoration. It looks like it has been wire wheeled or bead blasted. I have made a drop box folder to share all of my pictures:
https://www.dropbox.com/sh/7eaj2x4so7a65re/AAAUwewkJMui1STYXRInd4z1a?dl=0
