From Nissan 350Z & 370Z Wiki
It is possible to mount a Garmin Nuvi 660 personal navigator in the 350Z cubbyhole. The trick to getting the Nuvi mounted far enough back so the cubbyhole door will close is to replace the ball mount that came with the nuvi 660 with the shorter ball mount from the Garmin StreetPilot i3, part number 010-10675-10, "Suction Cup Mount, STPi3". I bought this mount from MountGuys.com.
Froogle search for Garmin StreetPilot i3 suction cup
mount
Nuvi 660 suction cup mount (left) next to
StreetPilot i3 mount (right)
How to mount it
Use the adhesive dashboard mount disc
that came with your Nuvi - stick it to back of the cubbyhole
Attach the suction cup mount from the
StreetPilot i3
Final Result
