I have a dual res master and booster under my trucks floor. I fabbed my own bracket to mount them to. I can't remember exactly which booster I used but it was from a mid 70's GM product. The master is a 1970 C10 from a drum/drum system. I use this truck to plow with and usually have about 4 tons of gravel loaded on for traction. This brake set up has more stopping power than any other big bolt I've driven and they're easy to apply, maybe a little too easy, but I like them.
Scott
