For the 4x4x302 build record:
New (used) Rear 31 spline Detroit Locker, new 4.11 gears, new 31 spline Yukon Axles, all new rear bearings and seals, and new studs. For the D44 front: new inner axle seals, new spindles, new hubs, new hub bearings, new bearing lock nuts, new wheel studs, and new (used) Ford lockouts. Also drilled and tapped a water drain hole in the bottom of the D44 (already did it for the rear 9), and adjusted the camber and toe (have BC Broncos adjustable upper ball joints and tie rod over linkage, so it was not difficult.)
Drives straight, no rear howl, no leaks, gotta love a rear Detroit locker!