If all the previous information is correct;
Input to Transfer box is the same speed as to the front right wheel.
The Transfer box has no reduction (1:1).
Then you cannot use a conventional reduction diff as used on 8.8.
You can only use the Jag rear end, which will be 1:1, same speed in as speed out.
If you also look at my earlier post, the transfer box output to the rear turns the opposite way to a normal trans output, so the Jag rear IS the only one you can use.
(The system, branded "Traction-4" by Jaguar, utilises a unique Visteon design that drives the rear differential "backwards." )