Oh, I agree the 426 is an incredibly hard-running engine. But from what I saw in the '70s, for day-in-day-out driving in addition to racing, the 440 Mag was a LOT easier to deal with. My racing experience, of course, wasn't part of anything organized. Strictly illegal competition on East 17th Street in Des Moines, Iowa.

Perhaps fittingly, East 17th Street ran alongside a junkyard.