Factory coolant collar and hard pipes to add this factory style oil cooling to your Z. If you are unfamiliar with this, it passes the oil at the filter through a heat exchanger w/ the coolant to help bring the temps down. This can be found factory installed in a few of the Infiniti models w/ the VQ37 engine.
This should fit in conjunction with many other aftermarket coolers, and will fit w/ the GTM TT kit, and Stillen SC kit, but will not work w/ the GTM SC kits. Any other kits I don't have first hand experience w/ so your on your own to determine fitment.
Can be picked up locally in San Jose, CA or shipped at your expense to wherever you want.
Looking for $100 obo