If you've welded the centre diff you don't need a vce.
You can refit the stock viscous unit to hold the ball bearing that keeps the transfer case output shaft in place. It won't DO anything because the centre diff is welded and immovable.
Alternatively, my gearbox was missing the ball bearing anyway, and a previous owner had put a rolled up piece of cardboard into the transfer case splines to prevent the shaft from sliding too far into the case - I replaced this with a piece of wooden dowel.
Push the shaft as far into the gearbox as it will go (away from the t-case), measure the bit that remains sticking out, measure the depth of the hole in the t-case and cut the dowel to makeup the difference between the two measurements.
The shape of the t-case output shaft will prevent it sliding further out of the t-case, and the dowel prevents it sliding too far into the t-case (which causes the oil seal where it enters the gearbox to leak).
Easy, and free.
