Well, the drivetrain goes in, Martin has proved that, and it would be simpler to keep the skyline engine attached to it than a YB
The issue you would have though I suspect is clearance at the front, unless you could get the box to sit back further than martin has so you dont end up with the front 2 pots RIGHT forward.
Obviously you would need to move the front diff further from the box in order to do this, and hence on a longer front prop etc.
Hadland would be the ideal person to talk to providing you had a sensible budget for it I reckon