The silverstar ultras are real bright, but I have heard about a lot of problem with them burning out on 2000+ bonnevilles. It has to do with how the headlights are mounted, 2000+ seem to have very little vibration dampening. So the vibration blows out the high intensity bulbs.
where did u get the HID'*? and is there different versions of the HID'*? or only one kind? i just wanna get something that nots gonna blow out on my right away and that actualy makes a really good difference.. i found the HID Xenon lights on ebay brand new for 12 for both the high and low beam and they are the 5900k? whatever that means
HID'* should be used on low beam only, because they have to warm up to get the full use out of them. With the highs being turned on and off, it'* bad for them. 9006 is the bulb type for the low beam.
Don't buy the cheapest kit on eBay you can find, but don't spend more than $100 either. Also, 6000k is probably the color temperature you want. It'* the brightest you can get before you start getting into the weird blue or purple looking lights.