Les, along w/ Tuna's over sized race radiator idea, I like your idea of pursuing an additional vented race hood, (and I know it's certainly not an easy mod to make look good,as well as being practical) but you could use a hood like Woody's. His inverted front sections on each side, pulls/slipstreams the hot air right out at speed; and vents even standing still. Maybe additional louvers all the way up the hood wherever you can put them. Swiss cheese the thing,lol. Too bad you can't just run w/o a hood all together.