Hi Alan,
It is possible to retrofit one of these auto dip mirrors (I've done it), but the wiring is a bit of a nightmare and you need to be really carefull that you don't crack the screen, as a fair bit of force is needed to remove the old one and install the new one.
The mirror looks like the standard one, but with a little bump at the bottom for the light sensor and no flip dip handle
Cheers,
Mike