OK, I have the drum/hub unit off and managed to match the cylinder after some searching at the local Napa. It's a 1-1/8" cylinder, and the shoes are 11" x 2". The rear assembly is a 1" cylinder with 11" x 1-7/8" shoes.
The Napa didn't have the spring kits for the shoes.

The spring return kits and self adjusters I used on the rear were
H7018, H2508 and H2509 from Autozone. (see pic in my first post)

Any reason I can't use the same kits on the front?

Last edited by Marc '46; 02/08/2018 2:28 PM. Reason: added info

Marc S
Houston TX
1946 Chevy 1/2 Ton