I built my engine to D-Dart specs and went a little further, I have the factory style 10.5 dome pistons, "920" Casting Heads with 1.88 intake valves, ports cleaned and gasket matched, rotating assembly balanced, LD4B intake, and a 650 Holley Double Pumper. The only thing I don't have is the crazy stupid expensive Doug's Headers, I scored a pair of Spitfires that I am running, but may end up selling my Spitfires to invest in the Dougs
