Only problem is, with what's available today with carburetors, that information is dated. Look at all the new style Holleys and Holley knock offs like the Quick Fuels and such. That MP information was written long before we had so many different adjustments like the idle and high speed air bleeds, the idle fuel restrictors, the fuel curve restrictors and on and on. That gives a LOT of leeway and tuneability that we otherwise would not have and they did not have when those articles were written. ...at least they were not available to the general public. Professional race teams knew about those mods, but they were not mainstream yet.