[West Coast GTO]

I am in the process of changing out the Hooker headers on my 71 GTO to RARE exhausts( oversized and 2 1/4"). I am surprised to see the relatively small exhaust port on the Edelbrock heads. I know I am losing some flow from the Hookers larger tubes but, since the E heads have such a small port area, it doesn't appear to make much difference.
Heads are out-of-the-box and don't look like any flow work has been done on them.
Would there be any reason to blend the exhaust ports to the RARE exhausts?
Thanks.