Found this in my Facebook page from Nissan:
The horsepower-loving team over at Costa Mesa-based Stillen is getting ready to unleash what it thinks will be a very popular product for a very popular car: a supercharging kit for Nissan 370Z and Infiniti G37 vehicles that boosts power from 332 hp to 515, all running while on 91-octane gas.
The kit is currently undergoing testing from the California Air Resources Board (CARB) and is targeted to begin shipping later this month. All the parts for it are made either at Stillen’s headquarters or elsewhere in Orange County, company officials said.
Starting price will be $5,899, and will require 10 to 12 hours to install by a shop, Stillen reps said. Nissan dealers around the nation are also ordering the kit to make it available as an option on the cars, which use the same V6 engine. (Infiniti is the luxury division of Nissan.)
How to get 515 horsepower from your Nissan 370Z - Auto Motion : The Orange County Register