Originally Posted by Dr. Evil
For that price, where?
I'm pretty sure those would be round lights and not rectangular 26 lights you asked about. I don't think the 26's can take a 100w bulb because they are very small bodied with a plastic housing and plastic lens. The 26's are 55w and $8x on amazon. If you can accommodate bigger round lights, you should go for larger reflector and higher power, especially up on the roof. A 55w halogen with a small 2x6" reflector isn't going to do a whole lot up there besides in-close lighting like your stock low beams.