I have a pair of 1968 GTO Ram Air hood scoops I took off my GTO to convert back to non Ram Air setup (not an original Ram Air car). How can you determine if the hood scoops are factory? There are no part numbers, but they are steel, and look exactly like the original non Ram Air hood scoops except for the "oval grill" piece is not there (just an open hole to let air in). Were there ever reproduction scoops made in steel? None of the current GTO part suppliers list them in their catalogs. Thanks!