Google the title and found this !!!
http://www.youtube.com/watch?v=vpPlNc7y4js
my guess after thinking about it ... you can fit a Gettrag JZ tranny on a rb to make it full RWD ... just need to put your gettrag RB bellhousing on the Gettrag JZtranny
my guess with more info ... XD
2JZ engine
skyline Gettrag tranny(4wd) with JZ bellhousing
custom oilpan (gtr style)
alot of custom work ... lol