Are you talking bulb type or color?
First off, what are your motivations for the HID's? Look cool? Improve lighting?
I can tell you right now, it'll look cool and improve the lighting somewhat but it'll be at the cost of other drivers. Most reflectors aren't designed to deal with HID output. Most reflector based cars retrofit projectors into their headlights to account for this. Retrofitting allows you to run HID's and reduce glare.
That being said, I don't recommend HID's. You'll get other drivers always flashing their high beams because they think you have yours on. That'll get irritating to you after the 50th car does it.
Here's the best way to illustrate it.
HID's installed in a Reflector headlight
HID's installed in a Projector headlight
One alternative to HID's, as far as USEABLE light is concerned are Sylvania Silverstar Ultras. I have a set and they produce a whiter light with a more useable light area. If you don't care about useable light they always have the cheap, colored bulbs that produce the color of HID's without the cost and glare issues.
If you're still deadset on HID's and blinding oncoming drivers then I recommend a 6000k kit. It has a light blueish hue and still produces a ton of illumination. The best way to illustrate bulb temps is this chart.
EDIT: Here's a good explanation from Omegaxenon.comQuote »What is Kelvin (K) ? :
Color Temperature is a measurement in Degrees Kelvin that indicates the hue of a specific type of light source. Many people believe the misconception that colour temperature is a rating of the brightness of the bulb or Hid kit . This belief is completely false. The reality of the matter is that the higher the colour temperature, the less useable light output you will obtain. A perfect example would be a black light. This light has a colour temperature of approx 14,000k and has almost no useable light or lumens output. Higher K kits such as 12,000k, 14000k, etc. have been manufactured for individuals that are more concerned about the actual colour output of their lights as opposed to the actual useable light output.
Omega Color (K) and Lumen (lm) chart :
3500K Gold Yellow 3,600 (lm)
6000K Pure White - Blueish 3,200 (lm)
6000K Pure White - Blueish 2nd Gen 4,200 (lm)
8000K Purple White 2,600 (lm)
10000K Pure Blue 2,400 (lm)[/quote]As far as bulb type, you'll need H4. That's the stock halogen bulb style. Any replacement bulbs or HID's will need to be this style to work with the stock wiring.
Another thing, with the H4 style, it has both low and high beams in 1 bulb. Unless specified, the H4 HID's only come with low beams. If a Hi/Lo kit is specified be sure to pay attention to price. A $100 dollar kit will have the HID for low beams, but will have some cheap halogen, that's actually worse than stock, for the high beam. A kit that is more expensive, and is usually specified as such, is Bi-Xenon. These will have HID's for both the high and low beam in 1 bulb. Here's a site that sells decent kits.
http://www.omegaxenon.com/page/page/2271500.htm
Thats it as far as I can recommend. If you haven't made up your mind please take heed. Take other drivers and legality issues into mind when deciding to go HID or not. It may look cool to you, but other drivers eyes will not appreciate it.
Modified by Red Devil at 2:57 AM 1/10/2009
Modified by Red Devil at 2:59 AM 1/10/2009