Ma Mopar engineered enough air gaps in the front of the car to adequately channel enough air for cooling through the radiator- and nothing has been changed about that.
Ma also designed and installed "just enough" radiator, shroud, fan, pump, etc. into the cooling system to make it reliably cool in all seasons and driving conditions. Me, I have seen my bone stocker get hot sitting still in traffic with the A/C on, so I modified it to turn off the compressor while keeping the fan working inside. . .I never had it get hot on the freeway unless I blew a hose or something. That one was a smallblock v-8. The only other things I did over the years was a flexfan and took off the shroud- it was busted anyway.
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being a pilot , you have obviously seen over heating due to air 'stall' in the engine compartment, all this air collected must go somewhere, usually under the car and out the fenderwells, make sure the air can cleanly remove itself after it collects the heat from the engine compartment
You spoke of a flooding condition on hot starts, that may mean you have some methenal in your fuel and its boiling in the carb with the engine off and high under hood temps
An electric fan wired to run with the thermo switch on and the key off can be a good addition to clear up your problem
