After using the wifes nav system on her Volvo I became insanely jealous and decided to get one for the Z. After convincing myself I needed a new head unit I decided to get the AVIC-N4 but later decided to go the double din route for a few reasons. I know the double din question comes up from time to time so I decided to share. AVIC-D3 with bluetooth module and iPod hook up. Had the deck, turbo timer, and mic molded. I was very happy with the work. The color on the pictures suck and I know it. My good digital camera is on a boat somewhere in the middle of the Atlantic.
Double Din Nav Install - 
