Before he goes all out on a full boat-tail, you might point him to that box cavity study we have linked to somewhere around here on E.M. ( which actually uses an Audi A2 as the test vehicle )
( I can't remember the title of the thread. Anyone else remember ?
)
It would be an easy mod to do when compared to a full boat-tail.
Also, I agree about the fit and finish looking OEM.
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