ATK 5.9 Magnum crate motor horse power

Blueprint does offer a flat tappet iron head motor already as the entry level. I think they would say the cost difference between a stock 360 stroke (3.58") and the 408 stroker crank (4") is quite small now days, so why not take the cubes? It doesn't cost that much and most people would happily pay the small difference for 13% more displacement.