Ed, i've used several of the Wilwood tripple swing pedal assy's. The last was on my buddy Lonnies '32 Ford. He wanted a wider separation in pedals, so i got the double cyl brake pedal assy and a single clutch so i could get a 1"wider separation. No power booster though.
FYI on the Wilwood dual cyl brake, it has an adjustable bar that sets the balance between frt/back brakes. No need for a proportioning valve.
Sorry for the dark picture of the '32 installed, i had to zoom in on an existing picture.
☆Add ☆ this was in 2008, i got them from Speedway. They were quite a bit cheaper then🥴