I apologize that I forgot to include my contact info and mention that I can't access the forums through my campus ISP (blame the government). Anyways, tonight a miracle happened after the whole internet went down and they subsequently fixed it. I can magically access corvetteforum again!!!!!! I will PM y'all immediately.
How does te adapter work? If i have a 08 z would it work if i have navi?
I have no idea in your case. It works by plugging in to the 12 disc rear changer harness (the harness is present in all c5's). It then allows you to plug in whatever you want in to the RCA input on the box. There are threads out there with info on it that may answer your question about the 08.