I would not go with a heat temparture of higher than 6000k The higher you go in kevlons the less light the kit will emit. 6000k is ultra white with the slightest hint of purple .I have this kit in my civic that i payed less than $100 for it I can set you up with the company They even back there warranty policy as I had a ballest go out and sent one out withtin a week. Stock bulbs are generally less than 5000k as the projector housing is what gives the purple/blue look. Do keep in mind when you install a hid kit without projector housing it will emit the light all over the place and seems as if you have your brights on all the time. I have mine properly aimed and dont get the flash that often anymore when i am driving at night. Here is a clip of my installation I did on my civic.

http://s198.photobucket.com/albums/a...=delete001.flv