Used Diamond W2 Aluminum Heads Yay or Nay?

On the aluminum W2 heads your looking at, how big are the ports cc wise considering there now a rectangle instead of an oval?
I seen what Dick Landy used to do. They are huge in size. Much bigger than a standard port intake is.

A well done W2 should enable your engine to do very well. If your drag racing & in search of big power, it would be the Victor head.