E-brake hardware mid-70's 10 by 2-1/2 drum

Those should be fairly easy to find. B, E, and late A-bodies with 10 X 2 1/2" brakes. Probably even some 1/2 ton Van's use the same stuff.
Parts of this vintage are kind hard to source here locally. Have a WTB ad on Facebook market place locally figuring I'd find a horder around here somewhere with a yard full of what I need. Also was told Dakota 10 drum stuff will work, I'll keep looking!