It seems that dcfish is the expert in this arena, so I'm wondering how challenging and expensive it is to add the oem navi and back up camera to a 2008 IS 350 that I'm considering buying. If possible, I'd like to have the the oem climate/radio/navi housing all the controls, as well as the wiring harness, so that anyone looking at it would not know it's aftermarket. All of this may not be possible, I am not sure. Please respond in this forum or email me at bitofwit@msn.com. Thanks! Dennis