Here's Buffalo's site.
http://inliners.org/buffalo/ I know nothing about him, just searched and found it.
A DISCLAIMER: Dorsey used cold rolled steel plate for his brackets, which I have serious problems with from an engineering and safety standpoint. The caliper brackets need to be machined from a medium strength steel with known properties. The text from Dorsey's conversion:
Below is a description of how I put disk brakes on this truck. Kits are commercially available for 1/2 ton trucks but none for 3/4 and 1 tons.
In the next few months I hope to find a machine shop that can make the brackets out of a harder steel, mine are cut from mild steel like the 1/2 ton kits, but I'm just not happy with that on a 1 ton truck.
A few basics about what I did: I used hubless rotors from a '90s chevy one ton 4x4 attached to the back of the '50 hubs. The hubs had to have the stud holes drilled out to take the 4x4 studs which held the rotors in place. I used calipers off a '79 one ton chevy 2x4. Some 3/4 tons used the same caliper from about 1979-1983 thats what the brake hoses came from. That style caliper has the same type mounting as the older chevys but uses a bigger cailper piston. I stayed with manual brakes and used a dual master cylinder from a '68 chevy one ton (with the check valve removed from the front brakes side). I found that I did not need power brakes it stops very well like it is, much better than the old "huck" drums.
While I was doing this conversion I found that it could be done using the common 2 wheel drive rotors IF you were going to use late model Chevy wheels. The bolt surface on the 2wd rotors is about 2" farther out than the old drum brakes and the original 17" tires would rub the fenders, but the late model 16" and 16.5" chevy rims have a deeper offset that would put the tires back in the right place. You could solve 2 problems at once! Change to disc brakes and be able to use 16" rims at the same time.
If you are going to try this either way the critical thing is to get the caliper bracket the right distance in from the rotor. Before you have the spacer plate made bolt the bracket plate and reinforcement plate to the spindle with the rotor in place and check to see if the caliper will fit on with brake pads IN PLACE. Use washers to space the plates in or out until the caliper fits. It is a very tight tolerance. Once you know how much spacing you need, have the spacer cut from steel that thickness.
