73 Duster build named Fred

Not that you asked, but before you end up needing to change your undies like me-I ended up needing to hold the middle of my race weight hood down because it would bulge up around 1000’. I put strips of 1/4” aluminum to extend the hold downs out closer to the front. I’ve seen some folks go right off the core support, but I think it looks better out front. Here’s a couple pics, hood off and hood on:
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When I finally sealed my hood to the carbs it generated enough pressure or lift to blow the hood right off.

I got lucky because it landed in the grass and it only hurt a corner.

It was weird to look at the hood bowing up and then...POOF. Off it went.