That 361 Edsel engine should be a good performer with the right tuneup. It was the real Police engine for the 1958 Ford cars when ordered for law enforcement purposes. Early on, I had a variety of FE’s in a ’56 Customline Victoria including a 427 Tunnelport. I used an older set of Hedman headers that had a cast iron adapter that bolted to the heads and then the headers themselves bolted straight up to that. These actually worked quite well when hooked up to the factory 2” Police exhaust.