Trying to put Yukon alloys in the front of the wife's XJ (Locked up XJ's old rig) last night and hit a snag. This is a hi-pinion D30 from a YJ, not sure which year. It obviously doesn't have the vac. assembly. But just inside of where the vac. assembly was there is a splined peiced in the axle tube. I'm not sure what it was for. It wasn't on my YJ D30. Mine just had the inner axle seal. Whatever it is, it's too small for the shaft to fit through. It looks like it's part of the housing. Anybody know if this comes out? If not I guess I'll have to grind it down to it's big enough