I am thinking about upgrading my audio system in my 04 GMC Envoy. It has the Bose premium sound system, but I want ipod connectivity and I just want to replace it. My budget is $600-700. I want to get a new head unit with the ipod feature, and it has to be able to control the ipod. Also, I want to replace all the speakers that came with the car, and if there is any money left, I would like to get a Sub or two and an amp.
