Today I was replacing my rear pinion seal and I need to set the preload.....but I need to know how many spider gears my rear diff. has? 2 or 4?

I've got a 95 t100 4wd with 3.4l and stock(4.10) gears..thanks for the help


White '95 T-100 dx 4wd. Auto.
3.4l v6 w/K&N air filter
285/75r16 BFG's Mud on 16x8 American Racing black Fuel wheels.
Sway-a-way torsion bars, soon to add rancho 9000x