When i bought my fox, it had the ion hid kit on it. Its just a single stage kit, so its set on the bright lights, but they aren't really all that bright. It has 55w bulbs, which is what the ballast is rated for. What are my options as far as making it dual stage os i can have regular and bright, and possibly making the bright a little brighter? should i just get a whole new kit or can i upgrade the one i have? How hard are these hid kits to install?