The 352 in 58 had machined combustion chambers, uniform and factory cc'd by the machining process., the problem was the spark plug holes were angled and there were sharp teeth in the combustion chamber. the trick is to knock out the center of an old plug and screw it into place then grind out any exposed threads and round the corners to make a good flame travel path. they were also shrouded around the exhaust valve. with a little rework they will work. compare valve sizes to a SBC. Early fe's came from the factory with solid lifter cam.s. most manifolds fit except the 427 and 428's that had taller intake ports. There are some good books out there that show how to build an fe, rework engine oiling, etc. they like more initial advance when you add cam and compression, you can rework the advance slot in the dist, braze in a stop in the end to reduce travel to 2/3 then usually set timing at 12 to 16 with 38 total depending on your fuel. Ford also used FE's in large trucks and industrial applications. with different cubic inches. Always check the crank casting numbers when you do a rebuild. shops do mix them up.
(retired Ford engineer)