My understanding is this:

If you have a 97 or older Sportage you can use the same diff front or rear, so you could use the OBX lockers with no problems.

If you have a 98 or newer Sportage you cannot use the same diff front or rear. The reason is in 98 KIA changed the rear axle spline count from 26 spline to 28 spline.

However, if you change out the axel shafts for 97 or newer axel shafts you can use the OXB locker. All other parts are exactly the same.

Logansportage <img src="/forums/images/graemlins/patriot.gif" alt="" />

White 1998 4 door KIA Sportage 4x4 w/Eibach 2.5 spring lift and TJ rear coils, 4crawler 1.5 body lift, Monroe Sensa.trac shocks, Bosch 4+ plugs, Eaton LSD, 31x10.5x15 BFG KM tires, 2.5 cat back exhaust w/SpinTech muffler