You can run an H9 in the housing designed for an H11 until the headlight housing or connectors melt. Putco mirror white which are a true 55w bulb same as stock and not a bulb that runs higher wattage to increase brightness. Also, if your SJB...(smart junction box) goes because of the H9's it WILL NOT be covered under warranty but you could always pop the stockers in before service. Bottom line, do what you want, but I personally would not recommend it.