This will never happen. Mainly because of what CrownR said. Also, supposedly the new Z is a bit shorter than the old one... I dont see how they'd fit their 5.6 liter in there. And they wouldnt make a brand new motor just for this project.
It would be more cost effective to shove the GTR's TT engine into he Z. And I highly doubt that will happen, again, CrownR hot the nail on the head.
__________________
|