[blykins]

Terry, you think you need it?

The different between manual and power brakes is that you use a brake booster that works off of engine vacuum.

You probably wouldn't use a booster (they're kinda large) for each front and rear brake sets....so you'd probably have to go from two individual master cylinders with a balance bar to one master cylinder pushing a brake booster....and then you'd have to put a proportioning valve in.

The only thing that would concern me about a Shell Valley is room to mount the booster. I know I couldn't do it because I have floor mounted pedals....but there might be enough room up on top of the footbox in the SV position to mount a booster. Shoot, the SPF guys do it...you should be able to also.

How big of a cam do you have? How much vacuum does it pull? You may have a problem with running power brakes....

Why are you switching?