I remember a TSB to fix shuddering LSD units that had the tech remove clutch plates. Not sure if it was the V6 or the 4 cyl rear diff.

Also if I remeber right the manual does not match how the rear diff is actually built even before the repair.

Kevin

87 Turbo Intercooled Raider, roller cam, torsen rear diff, LSD front diff, lockup auto with modified converter, V6 brakes, low transfer case gears...