I was worried about the headlights being out of aim when the car is loaded. On most HID cars the headlights self adjust as weight is added to the rear of the vehicle. On the Sti you adjust with the height adjustment switch which is what makes the HID light illegal in Canada. You cant have driver controlled headlights. Plus I wanted the factory system for its own trickness. The JDM headlights are all clear with no amber sections.