I've got the Phillips ballasts + 4300k D2S bulbs similar to what member Yugobernie has sold recently and I'm very happy with them. Installation is a simple "Plug & Play" affair requiring no wiring modifications or other hassles.
Although I'm sure there are some kits available for ~$250 If you are going to go that route it may be better to spend an extra $200 and get something that uses name brand components. And 4300k colour temperature will produce more light than the bulbs advertised at 5000k+