Any thoughts on E-BAY vendors for HID conversion? looking at bi-xenon-don't know how it works-slim digital ballast-HD wire harness-5000k white. This kicks up price a lot but am suspicious of cheapest kits.The current 9004 is really bad, also thinking of low beam HID only, perhaps spots for high beams. Experience, anybody? Indiana location, see lots, few cops stop, I guess OK unless terribly misaimed, hope for significant light improvement.