As others have mentioned, you can find most of the parts you will need. I had to get my brake shoes relined at a local shop, just like Paul did.
I also had no luck finding the brake shoe return springs (rear). So I had some made at a spring company here in the states.
"Necessity is the mother of invention." Let folks know what you need and they will help. Good luck with your truck!
~ Victor
1941 3/4-Ton Pickup (in process). Read about it
in the DITY Gallery1955 Grumman Kurbside "Doughboy" 235/3 on tree w/ OD
1957 3100 - moved on
1959 C4500 Short Bus "Magic Bus" - moved on
1959 G3800 1 Ton Dually "Chief" - moved on
1958 C4400 Viking "Thor" ~
moved on to fellow Bolter