Question: what axles are in my jeep xj?
Answer: Pre-95 Cherokee XJ. Front Axle: Dana 30 with a vaccume disconnect. Differential Location: Drivers side. Stock axle splines: 27 (upgradeable to 30 splines) ... 
95 1/2+ Cherokee's. Front axle: High pinion D30. Differential Location: Drivers side. Stock axle splines: 27 (upgradeable to 30 splines)