The loom isn't a straight swap for a lot of reasons, but it can be done: the bulkhead is a different shape, the fixings for the fusebox are different, the connectors on the door-looms are different etc, etc.

I didn't bother with the half-moons in my chassis legs and had no problems so far - I just removed the flange that sticks down and seem to have enough clearance with a -25mm drop.

The tunnel needs a bulge to take the transfer box and I'm not entirely happy with my transmission crossmember so I'm open to suggestions/pics of anyone else's conversion.