I own a canadian LS 400 and i was just wondering if there is any major difference from the us spec LS 400 because they don't have any of the height control or stiffness with the air suspension and I'm also pretty certain I have air suspension but is there a way to find out for sure if i do. Since the us LS 400 have the height control stock would that mean I would have all the wiring for the switch inside the console it just needs a switch or what. alright I thinks thats it thanks alot guys and by the way this forum is awesome I have been reading it for days and I'm always learning new things thank you.