Pressure valve vs proportional valve

[KPace1955]

Gentleman - I have a question\concern about removing the pressure switch and using a proportional valve instead. My concern the pressure switch is over 55 years old. I have disc\drum on the truck and now putting a power booster on it also. I'm tired of manual brakes. THought's on replacing this item? Also thought's on where I could get a new Proportional valve for a 1968 F100 disc\drum.

[DCrusher]

K. I kinda missed the question here?? What are you refer to as a pressure switch??

[Jbarnes79]

When I swapped my front axle for the disk brakes and added power brakes, I used this from WilWood that has a pressure switch integrated into it. Works very well.

https://www.summitracing.com/parts/wil-260-11179

You can see the setup on the last page of my build thread. Same setup disk/drum and booster.