werd, and go look at my thread about boosting a car. you can see most of my vacuum lines.
i would NOT run the wastegate or boost controller off the turbo fitting. the pressure there is not the pressure in your manifold… which in case you weren’t aware, that is what you are trying to control.
pick up a vacuum manifold that goes in line with the brake booster, or if you have pulled you emissions stuff out, you should have an open port on your manifold.