Hey, whatever works, right? I think 400+ HP out of a 281 CI is pretty respectable. 500+ out of a 330 CI? Definitely working for them.
Don’t forget the 96-98, 99, 01 Cobra Motors, and 03/04 Mach Motors. All aluminum 4.6L 32V 320 HP. Ford could build a good N/A Engine if they needed to. (And the 5.0L Cammer that Ford makes as a crate… 420 HP N/A!)