Ok, I am looking at getting those HID Blue Lights for my 2003 GMC Sierra. I want to buy the ones that are made by XanTec, however, I dont know what kit number that I need to get. I have tried and tried and TRIED to get a chart that lists the kit number that I need and I cant find it. Does anybody have any ideas on a GOOD HID light company. What I want in my lights are a real good bright blue light. So if anyone knows a company thats better than XanTec, please let me know.