DO NOT get that 6000k if you want better than stock light output.. like i said and tony said the best color temps is in the 4000k range.. 5000k is pushing it but is okay..
anthing 6000k and beyond and your looking at stock to be better as all you'll be getting is some really expensive nice looking lights and a purple ground
Also their kit on that site looks REALLY
what you'll want to get is a Hella ballast and philips bulbs. but see that would be completely custom unless you can find a company that has them.
and these guys might be able to recommend a better place for HID's Click below
for just a ton of info on hid's