Here is what I did. I use to use the Cnc buggy pedal assembly but it just wasn't strong enough. So I built a rocker assembly that fits in the same mount the Cnc unit used. I did not want to get under the dash of this thing with grinder and welder. Any way, the rocker confers the pedal push to pull and a cable wraps around the right side of the cab to behind the right seat. Here the secound rocker turns pull force back into push at the vacuum chamber.
The vacuum chamber and master are stock 94 f150 parts. Plus there's a inline bias valve in the rear break line.
The system has plenty of power. I have 4 puck calipers all around and it will flat stop the truck. But and it's a big BUT. It runs out of vacuum fast. I have a big cam in the engine and doesn't pull any vacuum to help the electric pump. I either have to add a secound vac pump in parallel or go to an electric booster. I have been shock testing and it simply runs out of vacuum to fast if your pumping the brakes. No buano.
If I do the electric boaster I think I can keep all the hard parts in place and just swap the vacuum chamber for the electric booster.
If you have any more questions just ask.