I'm thrilled I got this hood for my Dart...
Do what OMM told you to do. Use a 4” die and punch. I have used them before, but at the 2” diameter. It cuts a clean hole, quickly, way cleaner than having it lazer cut and there is virtually no heat involved. You just drill a hole center location and mount die on the underside of hood with threaded rod through the hole. Mount die on top of hood through threaded rod, thread and hand tighten nut. Then drive the die. Won’t even mark up a fresh paint job.