I've got a Kennedy headlight harness with Silverstar low beams (DOT approved) and 100W Hella highbeams (Non DOT approved). I have seen others with the Silverstars running on the OEM wiring, they are not nearly as bright as mine with the larger wire of the Kennedy kit. The kit also lets the low beams burn when you turn the high beams on. Puts out an impressive amount of light. I really hate driving anyone elses vehicle at night now. IIRC, total cost of the setup (bulbs and harness) was about $175. Much cheaper than HIDs at the time, but I've noticed that prices are coming down a little on the kits. I've also seen aftermarket projector lens assemblies available, but nobody mentions using them.