Help with power brake booster

[landarts]

I searched for information on converting a 67 C20 that has only a master cylinder on the brakes to a drum/drum power brake. There are several threads but I could not find what type of trucks they are finding the power booster from. I have a local pick and pull that has 1967 to 1999 trucks in it. There are quite a bit trucks to pull from if I new what worked.

So the end goal is to add a power brake booster to a drum/drum set up on a 67 C20. While I am doing that I will change out all the rubber break lines.