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Old 01-21-2012, 02:22 PM   #8 (permalink)
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None of you combos would have as low a drag compared to a conversion to a K-form roofline.
If you're absolutely attached to the notchback form,then you need to look at Hucho's book section on passenger cars,specifically the Figs. 4.63,64,& 65(2nd edition pages 156-7)
If you're looking for really low drag potential the Civics roof will need to look like the Mercedes-Benz 'Boxfish,' concept car.
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