My point is your always champion the small, carbs, heads etc.. Always citing velocity but you don't seem to know what the ideal velocity.
Yes there's more to a running engine, the whole point of this thread velocity is important but it's at the mercy of what generally available/doable options and what's gonna give the most bang for the buck. Just cause a 318 head can perform doesn't make it the best option in every circumstance like you like to push, and don't mean it's never the right option either.