This is sort of what I was getting at.
I think the CNC ported stealth heads are $997 each and flow about 320 cfm.
A pair of Victor M/W heads from Hughes is $1497 and I think they flow about 320 cfm out of the box (according to Edelbrock, 322 @ 0.600"?)

The Stealths do come with valve springs where the Victors don't, but the Stealth springs are not going to work with a cam that would make 700 HP numbers.

I think at the 700 HP level, both heads should be using high quality rocker systems, so the cost of the differnt rocker offsets is a wash, same for intake and exhaust.