Thinking out loud here and not telling anyone what or how they should do something. I bought a brand new flat hood from AAR back in 1999 with the intention to cut a hole in it for a tunnel ram. I spoke to AAR before any cutting and he told me since I was cutting thru structure to fiberglass in new structure before I cut. So I cleaned the underside of the hood where new matt would lay in. Cut some 1/2" thick 4" wide strips of celotex foam insulation board. (Hood upside down on lawn) After positioning the foam planks on the underside I glassed them in thus tieing them into the existing structure. Next day I cut my hole and the hood remained just as rigid as out of the big box.
I could see that being beneficial. However it doesn't seem to have lost an structural integrity. I might reinforce it more when I add a scoop or cowl(if). But for now I needed something to kind of cover the engine for drag week in 5 days. Next up is a makeshift rain cover for the throttle bodies.
Your Barracuda looks lean and mean with those carbs sticking thru.
Thanks, but no carbs here