I think that is all the aftermarket makes. If you swapped in a SR rear axle, you'd have a factory air locker that's 9.5", and a later front diff will get you the 8".


89 SWB, V-6 5SPD, OME Shocks, 16.5X37's, 2"BL, SR axle, Gen2 brakes, Lincoln w/Superwinch