I just installed a HID kit bought for less than 50bucks from flea bay... It's brilliant!
I had one on my Lexus that cost me 250bucks (back home in the UK) and that was worth the money, this kit is just as good and definately worth the cash.
Get one you will not be dissapointed.
Don't mess about with those halgozeon crappy blue bulbs that just reduce your overall visibility, buy a HID kit with all in one starter and ballast units and you'll be able to see much further.
The only point to note with the kit I bought was when plugged straight into the PT wiring harness the units did not work, seems the polarity was wrong on the plugs.
I just removed the little tab that stops you plugging them in the wrong way round from the end of the HID kit and plugged it in the wrong way round and it works perfect.
The bolb was plug and play and I used the sticky foam pads that come with it to attach the ballast boxes to the top of the plastic inner fender (between the plastic and steel fender, not inside the wheel well).
It only took jacking each side of the car up, didn't even take the wheels off.