ive seen some pictures putting a led lights on there audis but havent found one in the market yet. like an s6 or r8 wannabe. if u guys have any idea where i can find one please message me. a noob question, i dun know anything about hid's or sound system to speak. wat bulb size does the a4 b6 have for the headlights and for the fog lights...planning on changing them. ty