imagining in my head...this could be very tricky.
the new monster headlight kinda/sort of separated in two section right? You will need new cover though. or just get a use headlight bucket from the older monster and retrofit that...keep your stock one.
yeah...seems like a winner of an idear....look up HeMan's old HID thread.....I am too lazy to search it right now, but I am sure that'd be just the ticket!