1968 Dodge Dart hood vents

I liked the tassels on there

I bet at speed that will really cool things down under the hood
Any chance you took "before" measurements of the Temps?

(It may even be visible in the coolant temps)
I have not collected temps yet. I will plug the vents and see where the temps go, then unplug and see. I want to do this on a hot day and hopefully the outside temps and humidity will be very similar while I run both tests.