Those are for the intakes (Ebay) which wouldn't be of much help, since the exhaust side is so poor on the 235/261 head.
Adding more lift/duration to the exhaust side is typically more useful than on the intake side, even on an SBC. I believe that bulldog cam you're using has just such a split pattern, right?? in which case changing the rocker ratio isn't worth the effort. For those who are contemplating using these higher ratio rockers, you will need to hog out the pushrod holes so the pushrods don't hit the head.
