qoure Less) I've tried it. No measurable difference. I also pulled the weatherstrip that seals the back of the hood to the cowl. All I got for my efforts was a filthy engine and hood insulation. I even tried pulling the fan and shroud to see if it was a restriction at high speeds. Total failure. My testing was at the race track in 95º heat.
(It may help while sitting in traffic but not while at full throttle on a track)(quote

I did the same thing as Less did verbatim we did this 10 or so years ago and with no good results so the cawl rubber, the belly pan and all factory things stay, your car will run cooler it is designed to run 195 to 210 degrees ,, the almost only way to run cooler is to install a 180 thermostat . Ten years ago U could find a 180 thermostat today i don't think so.
we also cut the veins in the grille . but they r designed to hold the air if u cut them air blows back forward out of the grille even at 100 mph so dont cut them.
jim