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Old 08-07-2015, 10:06 PM   #15 (permalink)
93tracerwagon
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Join Date: Aug 2013
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Box cavities

I am not sure exactly what these are. Is this the cavity created by recessing the rear of the vehicle like has been recommended for car mirrors and like the hatch glass of the Original VW Rabbit (about a 9% savings in drag IIRC)?
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