I wasnt real sure where to put this but while browsing the web I came across this.
370Z/G37 (VQ37VHR) ECU Patch Harness
It allows you to connect a variety of aftermarket electronics without having to cut into your OEM harness. It also allows you to do the wiring outside of the car where you will have plenty of room instead of under neath the dash. Pretty cool product for the guys out there heavily modifying their Z's.