Question on vacuum for small block Chevy High Performance 350?

the power brake hose has to go to a big fitting, on the intake or behind the bottom of the carburetor. the vacuum advance hose has to run ported ( above the throttle plat on the carburetor so it can advance itself when you give it gas. you don,t want it ran straight off the intake or it will be advanced all the time when it,s running. the egr valve hose has to have vacuum all the time when it,s running so find a vacuum source where you can hook it to.