My buddy just sent me an email clarification. They thing the rear differential failed due to a reused crush sleeve prior to him getting the truck, the rear driveshaft looks like "normal" wear and tear, and if I understood him correctly, the t-case problems didn't involve the output shaft so they all seem to be unrelated issue that all happened at once.
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1989 4Runner: Dual Ultimate (Inchworm front & Marlin 4.70 rear), Marlin Twin Stick, 1200-lb clutch, 4.88 R&P, Aussie Front, Detroit rear, 30-spline Longs, Long hub gears, ARP hub and knuckle studs & 35x12.50 Cooper STT PRO tires. Marlin rear bumper & sliders. FROR front bumper. SAS with Alcan springs & Rancho 9000XL shocks. Budbuilt Bolt-on traction bar. Custom Interior Cage by Those Guys Rod and Customs.
Moab Tested & Rubicon Approved
