I have an Alpine iva-c800 multi media system in my 97 suburban. There is a dvd navigation with it but its a disc that was made in 2000. Does any one know if ANY other navigation/map disc will work in my system? Or any other Alpine will work? I was thinking I could find a much newer map disc on ebay but wasnt sure if it would work with my specific alpine unit.

Also, this system is all connected with ai-net cables from alpine. If I bought a newer alpine head unit that was a touch screen, if it was connected with ai-net cable would it work with my brain? thanks!