Guys in my Ford Group have used these on 302's, they are a copycat of the Patriot H8433's (see picture)
https://www.ebay.com/itm/26571879999...UAAOSwvbZimCWL These will fit most standard heads and most aftermarket heads, they are not for the GT40P heads. These hug the block better than the rest. This shows the steering box clearance in a '53 car.