They are totally legal to have aftermarket hids kits fitted as long as you have high pressure washer jets,which I have on the car as standard as its an elite, The xenon headlights on a 98 model elite are exactly the same as normal projector haedlights as the pattern is the same through out so making them not illegal. If they are e-marked they are legal if they are not e-marked they are not legal. I have done my home work and investigated into this and I am not the sort of person who would fit some that is illegal. I have spoken to someone who is in this line of business and has told me that it is perfectly to fit aftermarket hid kits to a vehicle as long as the vehicle is fitted with high pressure washer jets, which mine has.
Paul