So far the only price I have seen is the Hughes's 1850$ for the assembled pair. The Indy SR's are about 1800$ pair assembled. The Indys need longer pushrods, head bolts, oiling kit and valley cover. What do the Bulldogs need? Longer pushrods propablty because of the longer valves? How about the head bolts, can you use the factory ones with hardened washers? How about the exhaust flange location compared to factory iron heads? Is it higher? More outwards? Need for custom headers? I think the price is pretty close to that of the SR's, so that wouldn't lead my decision in which one to choose.