Got to make sure you have the right info, when ordering side shafts (axle shafts?). Is it the front you are refering to, or the rear. In the rear some XJ´s came with the 8.25 Chysler rear, some with the Dana 35. The front was most always a Dana 30.
Where are you shipping to and are you looking for OEM replacements or after market alloy shafts.