RE long arms and XJ leafs on the rear? Won't the front and rear suspension be touching in the middle?
Now change just a couple of things and this'll be about what my YJ is.
4.3L, 4L60E, and a Bronco D20. Leaving my wheelbase stock I still have 28" of rear driveshaft under the Jeep which is real easy on driveline angles.
One last thought. Is there an adapter needed to go from the TF727 or T-98 to the NP231? I'd prefer one adapter at most if possible to keep the length down.