the kit that i used is PREDATOR ICE. you take the oem angel eyes bulbs out from behind the headlight and plug the ballast & bulb in. the kit in pretty much a plug and play. due to the design of the engine bay it is VERY hard to do this install without taking the headlight out. but to take the headlights out you have to unclip the bumper
so i got it done by my body shop. they charged me $150canadian to install and $199 for the kit. if you have any other questions just ask ill do my best to answer them. heres a link to the english bimmer thread.
http://www.bimmerfest.com/forums/sho...the+angel+eyes