So the only real problem is getting the reflectors to keep their beam pattern?
Don't you need spray jets for HID lights as well? Or is that something different?
its not that simple,
the UK lights are not crystal, the reason for that is because the glass is specially formed so that as light passes through it it is redirected to make up the beam image.
with the Taiwan clear glass lights, the beam image is made by the reflector itself, but being for wrong hand drive cars it points the wrong way and cant be used.
By fitting UK reflectors in the Taiwan lights, the light is pointing the right way but there is nothing to create the beam image because the glass is clear and the reflector is smoothed instead of patterned.
with Projector lenses, the light is passed through a hole that makes the light the right shape and then it is magnified by the projector lens, so with projector lenses everything you need to make up the beam image is already there, so there is no problem.
the problem is that HID lighting is supposidly so bright that if it was ever to pass onto the wrong side of the road and into peoples eyes, their eyes would be vapourised and their bodies carbonised instantainiuosly. there for some people say that they should be self leveling which is where a motor adjusts the angle of the light depending on the angle of the car, such as if there is more weight in the back of the car it changes the beam angle.
you don't need washers or wipers for the lights, but again some people might say you do.