The motor showed up last week with an RB25 tranny and oil pan. I'm sure the owner will post pics and details when it is done. He tore apart the motor and is using a PT67 from Precision Turbo and he is sending the head to Jun to be fully built. This this should be pretty mean.
When swapping the RB into the Z, you have to cut the firewall and puch it back a few inches right above the transmission tunnel. So there is some fabrication involved. As long as you know what you are doing and aren't scared of a little work it can turn out very cool.