I have the service manual for the 2001 B1500-3500. It only cost about $30. with shipping from dodgeconnection.
I have no way to copy the whole differential section but here are the specs for the 2001 9.25.

ratios: 3.21, 3.55, 392
case flange run-out: .003
case clearance:.005
ring diameter: 9.25
rgear backlash: .005-.008
rgear runout: .005
pinion bearing preload: old bearings, 10-20 in lb
pinion bearing preload: new bearings, 15-35 in lb
cover bolts: 30 ft lb
bearing caps: 100 ft lb
r gear bolts: 115 ft lb
pinion nut: 210 ft lb
ad lock screw: 90 in lb / 7.5 ft lb
b plate bolts: 48 ft lb

good luck !