Need to clarify. As we all know flow figures between ports would be with-in closer %'s with an I.R. head.
But can big #'s be had with standard location ports. 99% of the big Hp per cu.in. engine combos are based on a
High Port I.R. head design.
So how close would the original RA V head be to the old one and still show those hp #'s we would need to justify the cost.
