I did the 4runner caliper swap on my gold one and haven't been happy with it. Could be an issue with the rears added in, but in damp road "crap I need to stop" braking I found that the front end locked up (with 33s) way to quickly. I know a lot of people seem to do it, but my concern is that it throws the front-rear happiness out of whack. I did like the slotted rotors I bought with better pads though.
Slid thru too many intersections to be totally happy with the caliper swap. May be ok for others, but ask around some before you do it.
Oh and I got a few extra sets of 62 vacuum solenoids if you keep the tcase. FYI.
I just read that the 96 non ABS booster for an 80 series is a direct bolt in upgrade. I'll maybe start there. I did the 4runner caliper upgrade on my previous 62 and wasn't very impressed. Felt a little squishy.... or... had to push the pedal too far to get adequate braking. One thing is for sure, I didn't think the Cruiser's brakes were adequate.
I just upgraded my Monty's rotors and pads to premium name brand stuff and the results are great. Glad I read up on bedding them in too.