Hello, I would like to know if you can easily replace the original radio (see picture 001) on the original radio (incl. Navi) ? Purely the exchange of a double DIN radio will be no problem, the plugs and recordings will be the same. Only, the Navi then needs an extra antenna, resp. where are the “clickers” for the mount hidden at the parts. Also I would be interested, which type name of the radio on picture 002 has (to search this used) steering wheel service goes then also plug & play, or does that require a learning at the dealer? Thanks lg Jerry