I'm sooo respecting you mate! not knowing anything about it but still wanting to diy!
awesome!
I can't be of much help but IIRC Steve-B got an upgraded oil pan (to avoid oil starvation) upgraded lightweight pulley and possibly bigger injectors too?
Surely our resident experts will be along shortly, also did you have a look @ 350z-tech section regarding FI? Not just the forum, also the related guides etc there's LOTS of info there!