Has anyone ever thought about running 5.38 gears in the VX? This would drop times dramatically for you 1/8 and 1/4 mile racers.
Also, the reason no one really sees an improvement with a disconnected TOD for mileage or acceleration times is because the front hubs are still connected no matter what you do. Install some of the old fashioned "get out and put it in 4wd" hubs. They are readily available for the Trooper, and would allow the front wheels to be free spinning. Then disconnect the TOD so the transfer case wouldnt even spin the front driveshaft, and you would have true 2wd. You could then engage front hubs when wanting TOD.

The only way to go- then factor in a S/C!