Not sure where to post this question. I found an avic-80dvd that I might get, but I know nothing about this unit. Is it a stand alone unit and all I need is a screen? I have a dehp9/deqp9, is the avic-80 compatible (for voice commands ect.) How old is this unit, is it any good, is it upgradeable? Sorry for all the questions. Any help is appreciated.