Ford began using heavy gauge steel valve covers on small blocks sometime in the mid '80s. Does anyone remember what years? The steel-rubber re-usable valve cover gaskets were introduced at the same time. The 5.0 4bbl Mustang GTs had finned aluminum valve covers but 5.8 HO 4bbl trucks including Broncos, had stamped steel covers with a Ford oval and screw on oil filler cap. I think these would look nearly original on EBs while being leak proof and make it easy to add oil out of the 1 quart bottles.