TF,
Wheel Cylinders can be bought new from NAPA, the shoes can be sent out and relined. You'll have to fine a donor for the Drums and E-brake parts.
It might be easier to find a complete parts truck...sonething with bad sheet metal could be bought cheat and provide all of the parts you're missing.
A 2-ton just sold near me at auction for $700 (cab was junk, but it was a running truck)...take what you need and sell/scrap the rest and you get what you need for a few hundred.
Good luck!
Mike B
