I installed cross-drilled rotors (power stop) rather than the slotted ones as the writeups I found (no longer have reference) seemed to say the drilled were better for the offroad applications, with less pad wear then slotted. I have not noticed too much difference yet but have not wheeled them and still waiting for the larger tires.

96 T100 4x4 - 35's, 4" SL, 2" BL, 4.88s, ARBs, custom bumper & E9000 winch, etc.
99 F-350 4x4 superduty supercab turbodiesel longbed