Charles
Thanks for the info. Can I get the check valves at the auto stores and where would I get the vacuum booster?
Thanks again
Ken

Hi I and have a 61 M37 that I'm putting in a 318 Poly. I have a couple questions as to the brake set up. I have the stock brakes and installed the 1584 dual MC. Do I need a proportioning valve? I believe they have residual check valves built into them. What is the purpose of the check valves? Thanks...