GReddy just released a vehicle-specific Daytime Running Light kit for the 370Z.
It's basically a LED light strip that goes underneath your OEM headlamp. From the looks of it, it will not require any headlight modifications in order to fit.
Unfortunately we will not be selling these directly as they are a GReddy web site exclusive product.
You can get yours directly from GReddy here:
GReddy
EDIT #2- AT THIS TIME GREDDY CANNOT OFFER A GROUP BUY AS THE PRICING IS ALREADY AT A PROMOTIONAL DISCOUNT. PLEASE PLACE YOUR ORDER DIRECTLY THROUGH THE GREDDY WEBSITE. PLEASE TELL THEM WE REFERRED YOU
****SPACE SAVED FOR FUTURE DIY/INSTALLED PICTURES****