Where can I find verification the X3 4.10 is plug and play in 4.6?
 

I need to find verification the 2001 X3 with stock 4.10 differentials will fit with no modifications in a 2002 4.6 with stock 3.91 gears.

I checked realOEM. From what I found the diffs are identified as a unit. I found nothing to indicate they have the same case so the part numbers are different.

Anyone know where I can find documentation it is a plug and play for both front and rear diffs?

check if the part numbers for the stuff that connects to them is the same.

Good idea. I will check that at realm.

Nobody knows?