the term projector refers to the way the light is distributed through the headlight housing. HID is the type of bulb that is in the headlight assembly powered by what is called a ballast. which on our car is built into the headlight assembly as long as it is factory installed. if you want to upgrade the light to a brighter/bluer light i believe all you need to do is change the bulb
keep in mind the higher number the bulb is the less visibility you will have to the road. especially when its raining or foggy. i would recommend either a 6000k or 8000k bulb for a great look and best visibility.
hope this helps you out. again im not entirely sure if the factory ballasts will be able to power these bulbs