The valve covers fit my 352 FE. They do need a little trimming on the inside of the flange to fit perfectly and plus the splash guards made contact with the rocker adjuster. Since it’s aluminum, it was easy to shave and trim the metal.
The holes don't all line up and they don't clear stock valves, can't get them to fit. Even if you trimmed the inside out it would still be a lot of work to try to get them to fit.