How much is too much dual quad

Once upon a time, when I was young, I had a 72 Monaco with a 383 69 Road Runner "spec" engine, that I installed a Chrysler dual 4 manifold on, and two edelbrock 625's. 14 trials for jetting test/tune till something was averageable acceptable for a driveable car. This thing got 21 mpg Cdn. Was the stock cast 4bbl more useful? Was the Edelbrock single plane more peppy, sure. But what was more "cool"!
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