the kit that went into my v8 came from "competition limited" in michigan. phone # is 313-464-1458, fax 313-878-5477. i believe i have seen their ads in autoweek. the 9005/9006 kit for 4 headlight systems as in the v8 costs $108 including 4 bulbs; the 9004 kit for 2 headlight systems costs $68. there is even a kit specially designed to work with the audi bad bulb dash warning for $10 more. eliot