Yep it is hideous, but I would imaging to you and I £3.5m is a lot of money ....... to him its not even the small amount of change I have in my pocket
Have a look here http://www.350z-uk.com/forum/viewtopic.php?f=35&t=15617
The whole centre section can be removed, from the triple gauges to the gear surround, thus allowing access behind to easily locate your wire
As Lexx says, if you have the cradle in the arm rest then all you need is the adapter
Mine has worked with all nokia's, HTC's and iPhones
Cant comment on the Win7 Phone