How thick will the air cleaner element you use be? The first cast aluminum bonnet I saw was back in the early 1960 for use on a 1961 Studebaker with a factory optional McCulloch superhcarger on it. I may still have one of those for a small mouth AFB that I acquired on trade on something My message is try both and run the one you like the most
Mr.Cab Racing and winning with Mopars since 1964. (Old F--t, Huh)