I also have an '84 xtra cab.
To date I have rebuilt the engine, installed a chevy 130 amp custom built alternator with custom brackets for install, hand built shock hoops for the front with chevy rear shocks, 63" chevy rear springs with double shackles and custom u-bolt flip,
locker in the front, 3" skyjacker front springs with boomerang shackles, single piece rear drive shaft, hand built rock sliders. Also a modified front bumper from an Isuzu trooper.
We just installed an IFS rear axle from a V6 unit and installed the vented rotors from a LC and the V6 front calipers, MC and booster assemblies.
Still to come 4:88 gears, 35's, dual cases, drivetrain lift, x-over steering and possibly some cage work. It's still a DD and I plan on keeping it that way!
will post more pics soon!