You cannot just swap the bulbs. There are kits which include the bulbs, bulb holders, ballasts and igniters, and wiring. Thes cost a few hundred dollars and are illegal to sell and instal. But, many people are using them.
A better way is to buy the factory bi-xenons and install those.
No U cannot replace with HID lamps but if U wanna take the poor man's route then just swap out the bulbs for blue lamps. Downside is that they only last 3 months. 2 if U R running DRL's. the choice is yours.
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