Funny you should ask. I just posted on this very topic. Do a search for HYDROVAC and read all about it. Basically, the older big trucks had a remote mount booster with its own secondary master cylinder. You take the out line from your existing and route it to the in side of the hydrovac. Then you go from the out line on the hydrovac to your front and rear brakes. You run a vacuum from the intake manifold to the hydrovac. Then you run another air intake hose from a filter mounted on the firewall to the hydrovac. It's inexpensive and very simple to do. You can mount it anywhere and you don't need to change out your existing master cylinder. I have pix in my camera. I'll send you later. Skip
