Clifford Performance has intake/exhaust gaskets that seal up Really nice. I got one along with my intake and header from them and Never had sealing issues. Beat the metal gasket from felpro anyday because this one is a hard gasket material. I'd do that for better sealing. Far as the brake booster goes....the carb(if your running an edelbrock) will have a port where you can put a connection to run a hose to the booster, or on that manifold there should be a vacuum port with a plug that unscrews...just put a connection and run a hose from there. Many engines used manifold vacuum for brake boosters anyhow.
