Ed, good idea, the more I discover the more I need to dig deeper.

Well, I've ID'ed the power master cylinder and combo valve. Now don't shoot the messenger LOL. They are from a, gulp, 70-72 FORD Mustang/Merc Cougar!!!!! Took awhile to cipher that out.
Looking like Johnny Cash's Cadillac ain't got nothing on this truck LOL.
Wonder if this thread should be moved to the project forum as it's turning out to be quite the project....