Well, I should have been figuring some more before asking this question.
The Hemi, or Race Hemi rather, was build in 1964 and the Cross Ram that came with this set up, of cause was made to fit these heads.
So if these Stage V heads with stock port size and location is said to be exactly as the stock Hemi head, well than this will be a good match...
I would be interested also, if anyone could post the approximate cross sectional area at mid intake port of a STOCK non ported Street Hemi cast iron head and/or a race hemi head.