@mattys91gt The area of the hole below the scoop (A = Pi r squared if circles) should be equal or greater than the cut out in the scoop front (A=L times W).That factory hole was never functional. I think it was for clearance of the air cleaner (maybe). In your pic it looks like there is a lip around the edge to help keep some water out of the engine bay. That is the main reason I suggested something small for an opening. If you are only trying to vent some heat, you don't need much for an opening.
If you want help with the math, bring the measurements of the holes . We have been through reviewing algebra and geometry with two kids since Covid started. Might as well use it for good.
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