Is this the intake manifold vacuum?

Another dumb question for all you pro's out there. I'm changing out my manual drum brakes on my 68 dart (318ci) and converting to power and disc in the front. I'm trying to figure out where the booster vacuum hose would connect to on the intake manifold. Is what I have circled where I would connect it? It seems like it's a valve that has like 5 outlets and two of them are just capped. Could I use one of them?