I’m not sure I agree with that reasoning. The LS has one plug and makes best power at 28 degrees NA. They say having two points of ignition (usually on separate sides of the hemi chamber) causes the flame front to propagate faster and meet in the middle, leading to more complete combustion. Sure it makes sense in theory, but I’ve heard (from people much smarter than I am, and very high in the automotive industry) that the reason the gen 3 hemi has two plugs is because both of them were a compromise to the perfect location of where one plug would (should) be and can’t because of the valve placement. And they needed two because with one they couldn’t pass emissions.