Thanks for the reply Tim. Those parts look interesting and I can see where the lever could possibly attach at the top of a brake shoe and then when the cable is attached to the bottom of the lever and the parking brake is applied, it would push the shoe against the drum and set the parking brake. But I don't know where the start part would go and are these levers for one side (meaning two levers per side) or is it one lever per side? I have attached a few pics of my right rear drum for what it is worth (yes I know I have a leaking wheel cylinder...another problem I am working on). Right now, there is no cable going in to the drum, but when I get one, it will enter the drum at the bottom right and I believe it should connect to something at the bottom left. It is really puzzling why I cannot find any diagram of how the levers you sent a pic of would attach to the brake shoe and I have looked everywhere I can think of.
Wheel Pics
Anyway, any help would be great. It would especially help to see your parts actually on a drum. Any idea where I can find those levers? Every scapped (junk) truck I have found seems to be missing rear drums.

Thanks,
Larry