Hi, I was just wondering if anyone knew, do i need a canbus ballast for a clio sport 172 twin headlamp? I've got some canbus hid ballasts at the moment, which were expensive, but one is faulty, so i need to replace it. Do i need to pay the extra cost of a canbus ballast, or can i get a regular kit, which is cheaper? Also, mine are 35w ballasts, and i was thinking, since they need changing, i'd upgrade to a 55w set. Any thoughts, help and advice please.