For the autocross just run the car for 5 or 10 minutes before the run so that the engine is good and warm, and break out your flat blade screw driver and and crank up the idle a couple of hundred or more rpm to keep it from stalling. Try this before you start swapping to efi.
My truck has a 750 on it and thats all it would take to keep it from stalling....and it sloshes the fuel around a lot harder in the carb than that nice flat handling Dart of yours.
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