It's a bit more work but it avoids cutting in hood vent - my buddy used a couple of those marine evac air fans to pull air out and down near back of fender wells. He said it works great in stop and go/slow traffic. Just hooked them up with relay and switch.
Looking at this with wife's 57 chevy. Really don't want to cut hood.
I don`t have the room for anything like that, my engine compartment is full up w/ the 440/505 wedge and raised port heads , 2" headers, big alum, rad., w/ shroud. I even have to run a short mopar filter.