Just be aware that the halogen reflectors are not suitale for HID retrofit bulbs because they produce too much glare. If your reflectors have "HID" embossed on the front lens cover they are ok to use. If not, you may want to get the whole assembly from a similar vehicle or wreck with good lights. Safety inspections in some states may reject you if you have the wrong set up or you could get pulled over and get a ticket.

HID ballasts draw a large amount of current when first turned on so be sure to get the correct headlight relay amp rating or it may weld shut or open or overheat.