The center stack (Nav, audio controls, climate controls) on the 370Z is almost identical with my new 2009 Murano, and many of the other new Nissan and Infiniti models (G37, Maxima, F35, etc). If you cannot find the 370Z Service Manual, I bet the instructions to remove the center console in service manuals for the Murano/F35/Maxima would be very close to the same for the 370Z.
I know
All About Nissan has service manuals to download, but may cost you $10 for a premium membership fee. You might find them on enthusiast sites like nicoclub.com (the Murano service manual is there) or myg37.com.
--jayhawk