1973 340 Duster Carb question

Just tune it to be more street than 1/4 track.
I wonder if that will be possible.
I suggest a compression test.
at a decent pressure level, the 750 will be fine.
EDIT
The build-sheet says balance flywheel, so that points to this car having a manual trans. In which case the 750DP is about perfect,
What elevations is this car expected to survive in?