I'd love the chance of playing with air scoops on a bonnet,,
I mean once it has a hole,,
why not add a few??? but modern ones, reversed and below ground so to speak,
like these but, cough, (a lot!) smaller:p
https://www.aulro.com/afvb/images/im...017/01/762.jpg
It would be an interesting exercise to see whats possible, allowing for rain, bonnet supports and underbonnet noise,

