It's on an XJ. It's not mine yet, but it's not a D35 or D44. No drain plug on the cover has me thinking a Ford rear end, but the shape of the housing just does not look familiar. Any ideas guys (and or gals).
POS. 
Real diffs have more bolts or drop out the front.
This might help you.
https://www.differentials.com/technical-help-2/differential-identification/
Real diffs have more bolts or drop out the front.
This might help you.
https://www.differentials.com/technical-help-2/differential-identification/
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It is a Chrysler 8.25.
Odd for an 8.25 to be in a 00 XJ. But looking a bolt pattern I believe you are correct. I just could not identify the diff cover. I'm guessing it's after market perhaps.
I've never seen one without a fill plug on the cover. Looks like 91'-01' was either a 35 or a 8.25, 8.25 having the distinguishable flat spot on the bottom.
It's not a Dana ?
The 8.25 is a lot stronger than the Dana 35.
