Before removing your belly pan, why not modify it to achieve heat extraction with outlets like fish gills?
That way, a Venturi effect is used to draw the hot air out, as parallel as possible to the flow of the slipstream, for low drag and cooling efficiency.
And, with segmented panels, less buckling. The panel over the exhaust pipes could be made of aluminum window screen fitted tightly to a light frame.
Overall, what sort of fuel mileage do you get, to compare before and after removal of the panels?
How about noise, before and after?
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