Short answer.. yes.
Long answer... Since the 44 is out of an XJ, you wont be messing with the spring perches I assume. That being the case, you are still going to need shims. when I lifted my 94, I did the 4.5" superflex kit, and a D44. I did the TCase drop, and still had major vibes. So I added some shims. I think I used 4 degree... could have been 6 degree. That made it much better.
I STRONGLY suggest a slip yolk eliminator and a new shaft. The new shafts are alittle pricey...but worth it. The SYE is cheap enough. Ive heard and read on this site that you can use a stock front shaft from an XJ in the rear once you install the SYE. Since the front shaft is already a double cardan.
Once I installed my SYE and new shaft, I couldnt believe how smooth things got. I was able to get rid of my TCase drop. I left the shims in, because its where my pinion angle needed to be anyway.
Good luck!
Justin