We've got to be missing something in our translations here...

The "Lower Air Deflectors" that I'm referring to are the ones that are attached to the bodywork on the sides and just below the mirrors.
(Upper air deflectors being the ones that hide behind the windshield when it's all the way down...)
Are you talking about those suckers that are down just in front of your feet? The big black ones that you're not supposed to use as a footrest?
I had them off when I stripped the Tupperware to install my floorboards; pretty easy, but you've got to remove everything else form the top down first!
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2010 Blue RT Audio & Convenience model Se-5 transmision. Dealer-added foglights, accent LEDs and extra speakers. Some RTS chrome windshield, front spoiler and top trunk trim, RTS frunklight and frunk liner, Top Trunk liner, Chrome lower air deflector, fendertip LED bulbs and ISCI floorboards added by yours truly...