Just introducing myself and posting for the first time. For those who could not afford the factory navigation system, I just found out that the Garmin GVN52 Black Box will work with the 2007 G35 screen with inputs located in the center console. I spoke to someone at the GPS store (
www.TheGPSstore.com ) who said its easy to install and cost around $500.00. Also, a thirty days return policy if you are not satisfied. I'm a newbie, so please post if anybody has installed the black box. Disregard if you already have this info.