The goal of a head porter is to keep the port as small as possible for the given engine, to keep the port stable and fast. Not to straighten every bend, and enlarge everything to the max.
And with that "Money quote" well said, it is amazing to me how offten someone will say the 2.02 - 1.60 360 heads made there stock 318 pull like a feight train as there only mod or with headers as the only other mod.
Balance in a package is were it's at!
Velocity is whats need. Even more so for the street.