Not really. What you got is the basic navigation system BNS with the navigation unit in the trunk and the Symphony II head unit. You can replace your Symphony II with the RNS-E Navigation Plus but you will need to disconnect the existing BNS unit (they respond both to the same address and would conflict with each other). Since your GPS antenna ends in the trunk, it would be easier to get a new GPS antenna and install it behind the instrument cluster. The alternative would be to get an extension cable but then you would need to route this cable from the trunk in the back to the new RNS-E in the front. You would also need to get a new cigarette lighter, or simply ingnore the controls there after disconnecting them. While you are there disconnecting the BNS unit you should check which part number your sat receiver has. If it ends in "E" you are fine, if it's an "A" unit you would need to replace it.