Thanks. I think I'm going with your suggestion.You should read my contributions to the thread so I do not restate everything again, there is a lot of into/advice. That said note to answer your specific questions: Anything significantly brighter then stock has to come with a fan built in not a heat sync. Similarly any good set of bulbs has built into the bulb cord has a dongle with a set of electronics to make sure the bulbs work correctly. Above I linked the pair i bought. There of course many others.