This is normal for series II (face lifted) FTOs not an "aftermarket" mod. (You could have found this out by doing a search )
The series I (pre-face lift) FTO has the parker light with the driving light whereas the series II FTO has the parker light with the high-beam light.
If you do a face-lift upgrade to the series I FTO you then have a problem as you'll have no parker lights either with the driving lights or with the high-beams. Without parkers you run into legal / road worthy problems
In both cases however the globe is still the same (5w T10).
the headlight is definatly aftermarket, had a different brand sticker on the left headlight, and it looked like someone had acctually drilled the hole and put the second bulb in themselves. ie. adapted an older FTO headlight.