To further this point, when my oem booster died, I went to the pic-n-pull with a tape measure. Turns out up to at least ~’92 the mini truck booster has the same bolt pattern for the booster. I pulled the master with it, thinking I’d get a new one if it was roached. Slipped the thing into the cruiser and haven’t touched it since. *I think I recall adjusting the pedal push rod*. I’m on four wheel disc, so no comment on the drums.I have a 74 with drum brakes. Rock Auto has the booster for $119. I’m pretty sure I bought a booster years ago before the internet from the local auto parts store for a 79 Toyota pickup. It bolted right in.