My Dart that I bought in 75 and went through in the mid 80's has never had anything but a 6-Pack on it. Stock 340 with the 474 cam first go round & 394 stroker this last time & only had the carbs modified for the manual outboards with accel pumps.
Late 80's & early 90's it was a daily driver for a while.
Course when I got the intake & carbs it was with a whole car that only cost me 300.00!