One thing that was mentioned in passing but is real important is the rear pinion angle. With a CV shaft, the rear pinion (differential) must be parallel with the shaft. With a U-joint shaft, that's not true.
If you go with the CV, be prepared to do some real work on the diff (and possible the spring perches, and control arm mounts) to make it work.
01 Sport, front drum brake & birfield joint conversion, custom '4 Wheel Drive' stickers, neon washer nozzles, chrome type 'r' oil pan bolts, wooden bead seat pads, racing exhaust tip, offroad license plate frame,
lots of misc. stuff (2.5" Skyjacker springs, 1" BL, 1"MML, Custom flat tcase & engine skid, RE arms, Skyjacker shocks, JKS Discos, Superlift Trac bars, Garvin bumpers, Warn 9.5ti, Lockright & trac-lock, 32" BFG KM's, Kilby & warn skids, EOR rocker bars, cowl snorkel)