An easy way to install your twin scoops. NO TEMPLATE

I did it the same way on my '70 dart. I pushed a piece of the cardboard box over the studs to make a template of sorts. I then drilled out the rear holes in the hood like you described. Used those holes to locate the template. Easy to do. Used a 4" hole saw to cut the air inlet holes. Took about an hour total with the hood on the car!