Good thought about converting deck louvers to a sort-of rear spoiler. Look at some of the old photos of Panteras running at Muroc dry lake or Bonneville and check out how the airflow as defined by the dust trail separates at the leading edge of the sugar-scoop. Most of it seems to arch far above the deck which is part of the problem with rear spoilers on a Pantera (or similar car). Maybe with the louvers the separation wouldn't happen as soon. Too bad my proposed wind tunnel tests in the '90s at the A-1 tunnel in N Carolina never happened.
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