Did a little tinkering with the hydroboost last night. Looks like the RBV master will bolt right up to it as well as the 94 1ton master I am currently running.
I read about a lot of people saying the OBS master wouldn't fit on a newer Super Duty HB unit, but they were also "diesel" people. No offense to all the diesel guys on here. But a lot of guys think if it doesn't bolt right on or plug right in it won't work.lol.
Looks like late 80's F-SuperDuty pressure lines will be the ticket. I will need to shorten the pedal pushrod about 2" and remake the mounting plate since the 4 studs are spaced different.
Also looks like the pushrod coming out of the HB is .125" too long and not adjustable, so my plan is to cut it shorter and drill/tap the end for an adjustable set screw.
-PlumCrazy