Connecting PCV for the first time…is this nub at the back my carb where I’m supposed to connect it?

Why does the carburetor have a spacer when it will bolt directly to the intake manifold? The correct location for the PCV is the large port on the carburetor. The power brake booster attaches at the intake manifold conventionally. I could only imagine like Bewy said the engine might have a large camshaft that doesn't produce adequate vacuum for power brakes.