Would it be feasible for a dealer to take the RNS510 from one Golf and swap it with the RCD510 in another Golf (eg to change the options to suit a buyer)?

Could it be done quickly enough so as not to be prohibitively costly for the dealer to do it FOC?

Could it be done equally easily irrespective of any other factory installed options on either car such as Bluetooth or RVC?

I am not convinced of the value of SatNav for $2,500 . . . or is SatNav a must-have option? If so, why?

SatNav was a $2,500 option in the Mark V GTI. By rights it should be a less expensive upgrade from the RCD510, but it is the same cost as before (and I presume on Golfs without the RCD510 as standard).

Thanks
Dubya.