Beware of changing a fixed rear view mirror for one that can glide on a stalk.
I did that on a 4/4 4 seater and the result was: a reduced field of vision and above all tremendous tremble and vibrations which made that change rather useless.
Also the upper fixing of the stalk made the soft top less waterproof.
I don't know if that is also the case for an Aero SS.
D'herde Bart