Well i wrote some stuff then safari crashed, kit includes vts inserts to use slipper but just get 100,000k diff oil and use gear diff, put 10,000k in front and kit 5000k in rear and thats a good point to start.
I think centre diff should deliver traction were needed front or back going on whatever surface and give better drive thoughout...think thats right.
Also .... Whats a yokomo