Just a quick note. If you do put an aftermarket hid system, the higher the number doesn't always mean better. IE: 8000k isn't better than 6000k. Actually the higher number bulbs usually put out less light. My G35 has something like 4300k bulbs in it from the factory. They are a good bright white color with a blue tint. I want a little more blue color but I don't want to loose all my brightness so I'm going to put a 6000k bulb in it. I will loose a little bit of the brightness but I'll gain more of the look I want.

Make sure you do research on these systems. Good luck.