Power Brake booster hose location?

Dana67Dart said
2 possible manifold ports that I can see.

View attachment 1716054308

View attachment 1716054309

If neither is a manifold vac port you might have to use one of these.

View attachment 1716054311

Or dump the power brakes. Totally not needed on an A body

Take the plug out of the first one pictured and use it for the power brake vacuum port and put that plug in the second one pictured or you'll have a water leak.