Indy 360-2 is the aluminum version. i don't know much about the indy stuff. never looked into there heads all that much. i've had W2's for so many years and they performed so well, i couldn't take them off.
Have you ever run a W2 that was CNC ported? Or has it all been hand ported?
There’s a circuit racer here in AUS who runs W2’s on a 358ci (340 block). It’s making 660+hp.