If anyone has considered upgrading to hydroboost brakes in your full size Jeep (or other project) I have worked up a pretty good system using used Astro/Safari van hydroboost coupled with a spacer and bushed pushrods to fit your Jeep.
I'm selling a ton of these on ebay and you can check them, and my rep, out there under sterlingworth16.
$75 + shipping for just the HB.
$100 + shipping for the HB and Astro MC.
Another bud makes the spacers in stainless and plain steel ($35/$25 +shipping, respectively), I bush the rods to your pedal pin N/C and provide the mounting bolts, you buy your hoses at ~$50.
I have plenty of tech for your application if you ask and I work up various new systems. Just completed one for a FJ40 body on a cut down Wagoneer frame with Jeep steering box and pump so give me a try. I have the M715 version in work at present along with a Commando and AMC Eagle.
The valving in the Astro/Safari is a lil less harsh then the one ton GM hydroboost which should lead to better longevity of your 1/2-3/4 ton brake drums😉
Look me up...
Installed with a larger capacity reservoir for rear disc brakes:
Here's the system (with custom spacer from Gary) that's being fit to an FJ40:
