I知 looking at a 2011 -2012 xj 5.0 I知 torn between the n/a v8 and supercharged one. I can find anything anywhere about the differential. So do. I have to get a supercharged one to get a limited slip? Or does the n/a ones have it ?

 

I think your correct.
I have an XJR with the E-diff. At least Jaguar does not advertise the E-diff on non-SC cars.
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Yep, all SC 5.0 have the e-diff but no NA do.
Not sure if the NA has a mechanical LSD or an open diff.