Hi, i have bmw e91 pre lci with halogen headlights. and i want to change to lci or pre lci xenons. if i buy those headlights i will take on them xenons with balast and i will turn on them into my halogen wire. it is possible? and what about angel eyes , if my halogens was without them, what should i do then? thank you! sorry for bad english, im from Lithuania