iirc pie had HID's in his white one. the beam pattern should be the same, still bending light the same way. apparently you need washers and auto beam adjusters too, but no one enforces it and some cars not even have it. the new range rover have orange side lights, which makes them fail the first MOT
You have your facts wrong my friend.
1) you cannot by law put HIDs into STANDARD escort lights, the lens optics will scatter the HID light here, there and everywhere. You dont need headlamp washers for HIDs
2)I wouldnt go above 70w with out upgrading wiring.
3) HIDs work best in projector lights, where there is a very sharp cut off.
HIDs in a proper setup (notice the sharp cut off):