I am thinking about selling my retro's. I have not installed them and its not a big deal if I dont sell them. The only reason I am thinking about selling is because I am thinking about painting my bike since summer is coming up. I know I limited my market by painting the shrouds white and black but I think its very unquie and stands outs. They are 6K lights with halo's. I already have HIDS and I didnt need to order new balast's so if you have HIDS already then you dont need to buy the ballast's but if you dont then you will need some. I would like to get 550 for the lights. Like I said I dont need to sell so no thread haters or people that like to bash on other peoples post like some have done to me in the past. Pm me with any questions. The back of a light has a small hole in the plastic from shipping. If anyone isconfused I bought another set of lights off another member so I could still drive my truck. Will post picture when I get home.