A tip---the front corners of the 'sun-roof' have a nasty habit of removing (they chafe) the paint from the metal roof----I have put a couple of layers of the clear plastic that Porsche (and other cars with very wide rear wheel arches) use to protect the front of the rear wheel arches from stone chips under where the sun-roof makes contact with the paint on the roof. Being clear, it is hardly noticeable, but it does protect the paint.