They are not OEM for that brake housing, so it could be considered a illegal retrofit. Lighting assembly's are designed around the type of bulb they use, and switching bulbs can alter how the light is thrown. This is why HID retrofits in halogen designed housings sometimes produce awkward and at times even dangerous light patterns. I know that the throw pattern of a brake housing is less critical than that of a headlight, but this is why I think this would be considered a illegal modification. In reality I doubt that you will EVER have any trouble with the law, but given my current situation it is not worth the risk.
2006 Buell XB12Ss for the street, 2005 KTM 300 MXC for the dirt, and a 2005 Ford Ranger EDGE when the other two aren't an option.