i can guarantee that your radio will work because they will change the radio receiver module...and it does cost at least rm2.5k...
but, for the sat nav to work, bear in mind that the solution may work with some exceptions that you have to accept...i doubt that all your car funtions will retain, i'm guessing that if the guy succeeds, you won't have your tv function and most probably, your sound system won't sound like before (all jap spec cars have HiFi Pro amps that sounds a lot better than local AB cars) or your cd changer won't work...
but, where i did mine, everything is working...radio, sat nav (with 2008 dvd map, the latest for sing-mal), cdc, pdc, bluetooth, tv...it works like a charm...you can ask alvin to confirm this...:top: