I wanted to originally keep my head unit stock, meaning just the radio that comes in the Bighorn. After three weeks now I want to upgrade all the way to the top dog with navi and hard drive. The unit that I want is the one that just came out for Jan/2011. It has everything down to the navi and real time traffic alert. The dealer is willing to sell it to me for $900.00 plus installation. I know that we can do better then that guys. Someone must have a hook up that we can all benefit from. At least put me on the path of the people to know to make this happen.