The 1960 had a six pack carb... Sequentuial three deuces?
My Catalina came from the factory with three carbs (Pontiac called it "Tri-Power"). The only changes I made were changing the carb linkage to strictly mechanical operation, and I added a set of tuned headers with lake plug extensions. Since I had to use the car to go back and forth to work, I kept it pretty tame. I would unplug the lake plugs when I would drag. I also changed the column shifter to a floor shifter (three speed manual transmission). The column shifter was just not adequate for "quick" shifting. It would jam regularly.