The vacume advance should be hooked to the right front vacume tube sticking out on the rear carb. on the passenger side front
![](/ubbthreads/images/graemlins/scope.gif)
The power brake vacume hose will go to the bigger vacume fitting on the intake manifold in back of the rear carb.
![](/ubbthreads/images/graemlins/scope.gif)
If that fitting has another small nipple sticking out of it that would, could be , the vacume source for the heater doors. I've never owned a stock 1971 non air conditioned Cuda so I'm not sure if the heater doors on them are vacume controlled or cable controlled
![](/ubbthreads/images/graemlins/shruggy.gif)
IHTHs
![](/ubbthreads/images/graemlins/thumbs.gif)