I had my two Duster hood made by Fibreglas Trends, one was for a tunnel ram and the other was a stock flat hood that I had them put a 1968 SS Hemi scoop on, I didn't tell them to not cut a hole in the hood for the scoop so they made it like a 1968 SS hemi hood with the opening cut completely out I could run two stock six pak air cleaner elements stacked on top of each other with the back of the six pak lid still not touching the inside of the scoop That was on a 400 stroker motor with a Eddy stock type low deck six pak intake