VACUUM LINES

NEED PIC. OR ROUTING DIA. OF VAC. LINES FOR THE HEATING AND AIR COND. SYSTEM. THIS IS 4 A 74 DUSTER, 318 AUTO 2BBL. IT HAS AVACUUM BOOSTER ON THE PASS. FENDER. DOES THE LINE FROM THE INTERIOR GO TO THIS, AND WHERE DOES THE BOOSTER PICK UP THE SUPPLY?

Thsi is the best photo that I have handy at this time.

I SEE THE TOP LINE GOES TO TOP OF BOOSTER,BUT WHERE DOES THE BOOSTER GET ITS FEED? TO THE CARB OR A VAC. TREE IN MANAFOLD? THANKS AGAIN

From the intake.