Nuther' booster/master combo that worked real well for me was a 88 dodge f/s p/u
it fit soooo well i only had to elongate the holes a bit to use the factory holes in the firewall. Also seem to remember using the original f-100 pushrod without mods. Only caveat here is that the booster is too big to use iffin' you still have clutch master cyl.
I did the changeover in about 2& 1/2 hrs.
Mikie
near ottawa canada
58 merc 100 panel & 64 econoline p/u