I have the diamond cut H4 conversion on my Dart. They look great, but I didn't bother with the cheap blue bulbs that they came with. I got them on ebay from prostreetlighting.com; they did not come with the wiring harness or relays, though. I picked up the harness on ebay, also, but I can't remember what the brand name is or who I bought it from. It's one of the better ones that get the voltage signal from the headlight switch, but gets main power for the relays remotely from the battery or alternator. This is the type I would recommend, since it does not require hacking up the stock wiring (plugs into one of the old headlight sockets) or replacing the headlight switch. It would only take me about 20 minutes or so to pull everything out and put the stock lights back in, and no one would even know the new ones were ever in there.