Vacuum line routing

I just installed the power brake master cylinder from the donor 74 Duster into my 65 wagon. I had to fabricated the rod from the pedal to the booster & now I need to extend the brake line to the master cylinder. My question is regarding the vacuum line routing. I imagine the larger vacuum line goes to the intake manifold. What about the smaller port line?

power booster.jpg

power booster (2).jpg