Ethan, What did you get the double diaphragm booster out of? I have been curious as well as others about what was going to fix this. My 69 wagoneer has always had a low pedal. I swapped in a dana 60 rear and a dana 44 disc front I darn near had no brakes afterward. I started messing with it by putting in I think a 1 " bore MC. Still low pedal. I picked up a brass proportioning valve but completely tore the rig down for a resto before I put it in. I'll be starting back up on it by fall. Also how much did you pay for the DD booster? It would be nice to have solid brakes again.
Thanks... Al.
Liz, covid, murdered 10/19/21