IIRC, I used the two different ones when I changed mine. I went by the chart and never talked to anyone about it. They work fine. Good luck


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