the most simplest bolt on way? just buy a 03+ rear brake assembly (caliper, lines, disc, pedal, master cylinder) and an 03+ carrier....thats what i did. change the carrier bearings since you'll be in there too. you will have to fab some mounting brackets and have them welded to your frame for linkage to actuate the master cylinder... or do what i did also and just replace the frame to an 03+... lol (guess its not really all that simple after all)