I'd keep vents to an absolute functional minimum for no other reason than to keep water out of the engine bay. Keep it simple aesthetically. If there's only one design being created, I'd imagine you'd want it to work on a car with the stock body panels since, taking an educated guess, most owners won't have wild body kits.
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'13 Audi RS5 Misano w/mods-The Red Mist
'13 G37 IPL-SOLD
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