Dam I just did this too, I end up using osram 7000k (up to 7000K) CBB.. supposedly its the brightest cool blue they made.
For some reason my driver ballast was impossible to put one.. really stiff.. the passenger side took 30 seconds..
I end up jacking the car up on the side I was working on and it gave me enough room without taking off the wheel... if it wasn't hot as heck, I would have remove the wheel also..
Got my info here.