Ported Indy VS open chamber ported W2

To the OP;

Are you thinking that IF the 2 heads were ported equal? With the same size runners in and out?

Aluminum doesn't make more power than iron. But it does allow more compression than a iron head with the same octane. This is why you see aluminum heads with closed chambers

The Indy head has the abilty to be ported out and flow more air and fuel over the W2 head. This is why you will see the Indy head before the W2 head on a car. Cost wise, you can look up the CNC ported Indy heads. With the W2, it's a head purchase, then all the parts, then it is off to the head porter. You can calculate the cost of parts, then the head ports cost is on top of it all.

Depending on where you live and/or who's porting the iron, the cost can vary a good bit. (Shipping to a guy is extra when you get the W2 heads, if you ship, shipping of the Indy heads to you is an additional cost over the price you pay for them.)