QU40526 is the correct right inner axle shaft if your 1988/91 F-350 right inner axle shaft measures 36
F-250 with 3000 or 3300 Pound Capacity Dana 44 Front Axle: 1968
QU50544 Differential Bearing and Seal Kit 1985-1997 10
TM1003 NV4500 Shop Manual
TK42068 Dynatrac Free-Spin Kit with Warn Hublocks for 99-04 F450, F550 synchronizers-1987-1995-zf-s5-42 QU40526 is the correct rightTK42068 Dynatrac Front Free Spin Hub Kit for 1999 2004 Ford F450, F550 Includes Heat treated chromoly spindles with spindle bearing, spindle seal, Timken wheel bearings and wheel seals, 35 spline 1. 50 inch chromoly outer shafts, 8 bolt Wheel hubs, double spindle nut kit, Warn premium locking hubs, instructions, and All necessary studs and hardware. With dual rear wheels, you will also need optional new hub extensions to provide clearance for the