the projectors u have in your dc2r is ok.. but will not compare to oem bmw, lexsus, mercs. projectors. You are refering to retro fitting. Its a lengthy process if you have never done it before and even worst if you dont know what goes with a GOOD HID system and wiring it up properly. HIDPLANET is a very very good site for info if your willing to read. A note tho.. dont buy projectors from them or members there because they are from LHD a country. Our projectors are designed for our road (RHD).
If your after a good HID setup drop me a PM. Ive got all the parts you will need to make a good setup and you can ask all those on HID planet if you dont believe me (im a member on there for some time now as well = )
Ive got ballast, ignitor, projector, proper wiring harness etc.