I watch , DragBoss garage, Tim had Darrin Morgan on and someone asked him to explain the work he did on the S/S hemi head package. He described how he spent 4 months redesigning the heads to get them to work, under what is acceptable to NHRA. They are completely changed from a stock head, not even close. Very intriguing what work he accomplished, and still make them acceptable. Let's face it, far from stock, with 4 months development by a man I consider , one of the best ever.
Ray is accomplishing what he has with a very different program ,and a very different set of rules. Plus it's Ray's work. He does the development.