Just an update... still battling with a driveline vibration after doing the hack & tap a while ago, where I found that my tcase output shaft has a "wobble"
I got two different tcases and hopefully fix what ails me. Upon pulling my NP242J (from the 96) I found that the vacuum switches between mine and both the 99 & 97 NP242J tcase I have on hand are different... both in location & plug. Have no fear, it seems that you can just wrench out the sensor, and swap them, and reroute the wiring harness.
Also found that very minor play in my RE track bar led to a couple of death wobble experiences at 100km/h after hitting a seam in the pavement. YIKES.... rebuild kit installed
Now onto redoing axle ujoints...