Don't the Canadian spec Impreza's have optional HID's?
Clearly the HID's pictured on the Subaru of Canada website are in reflector housings. What makes these different from putting aftermarket HID's in the stock housing of a USDM Impreza?
In fact after a closer look I read this on the same page:
Headlights: Contoured multi-reflector Xenon High Intensity Discharge (HID) (low beam) with auto leveling