to use hid bulbs you will need a hit conversion kit. everything you need to know is outlined on Team-integra.net in the articles section. honestly most of the questions asked here are answered there so it's best to check them before asking.

as far as the 9005 conversion goes, you might also think about installing a set of fog lights. fog lights are usually so low that no one cares when you have them on, but they are so bright that they help you see. it's really likie having a high beam mounted at the lowest point possible.

might want to think about it