I have a 2004 Landcruiser 100 Series Sahara, is has the standard Sat Nav & audio system. I would like to upgrade to include: Sat Nav BT Phone iPhone/iPod music Currently looking at an Alpine W910 which has just been released and has all these features, other options are the upgrade unit listed on the Toyota site or a cheaper unit from eBay. I was wondering if anyone has done a similar thing previously and could,offer any advice?