Thanks for the info guys. I went to Napa and they had 2 rebuild kits in stock at $7 and change each. Bought 'em both. I just wish I knew why my presumably stock rear end has different wheel cyls. I actually need all of the brake mounting hardware for the pads, etc. Time to visit the junkyard, I guess.
And George, if you ever get to Bend I hope you give me a holler. It's a beautiful town full of friendly people.