sorry i am a cheap arse

i just walk around the junkyard with a dial caliper and a note pad.:flipoff2:
seriously go to the local yard and do some measuring. there are a shitload of companys that make brackets for just about any caliper (or buy some steel like i did) find a caliper that fits a rotor thickness that has the same bolt pattern.
example rear disk brake kit for dana 44 5 on 5.5 $600(or so)
mine: front rotors suzuki samuri 25 bucks each NEW,calipers rear of a 1990 Nissan 300z (same rotor thickness built in parking brake) 40 bucks junk yard in almost new condition. brackets were 2 hours of my time with some found steel
saved $500+ to by beer and Heep parts:flipoff2:
dont be too quick with the guys who tell ya to search, you could get a better system for a lot less.
and if all else fails or you dont feel like it you can still buy the kit