It's a box on wheels...
Trade it for something more aerodynamic?
Sorry, I know that's not what you were asking for. But I think with that basic shape, any mods/improvements won't get you much closer to the drag coefficient of even a basic modern sedan shape. And the basic modern sedan isn't the most aerodynamic shape on the road either.
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Coast long and prosper.
Driving '00 Honda Insight, acquired Feb 2016.
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