The 97 and older Sportages had 26 spline axels front and rear. In 98 they changed the rear to a 28 spline, but kept the 26 spline in the front. You can use the rear LSD from a 97 or older in the front if you can find one, but you will need to do some minor clearencing to keep it from contacting the inside of the case and provide enough room for proper lubrication. You need to check the clearance on both the the end away from the ring gear and also the ring gear itself.

Thanks for the info on the OBX diff. If this really works, then there is an option for a less expensive traction aid in the front for all first generation Sportage owners.

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