www.xenonfactory.com I've purchased 5 kits from Alex, and they're top-notch. I recommend the 6000k kit to achieve that "supercar" look. The 10,000k I have in my GSX-R and its way too blue looking to have in a car, and the 4200k I have in my Mazda6 and I don't feel it has enough of an HID look. I have the 6,000k kit in my truck and they're bright white on the road, and when looking at the truck they have a white/violet appearance, similar to OEM applications for Lexus, Mercedes, etc., but much brighter.
What size bulb does the Sky use? If it uses a bulb like an H4, or 9006, or any other dual-filament bulb, going to HIDs will cause you to lose high-beam capabilities. It's highly unlikely that you'll need them after the conversion though.
If you guys need any more info on HIDs, just PM me or something. I researched this technology for about a year and a half before I made my purchase.
Good luck!