Does anyone have a clear photo or diagram for the PCV / crank case ventilation system for a 1970 340 six pack ?

My valve covers have a total of 3 holes as follows:

The passenger side has 2 holes
-one oil filler cap
-one smaller hole for crank case breather cap (AAR Style with 2 nipples)

The driver side valve cover has one hole that is much smaller than the 2 on the driver's side (PCV).


Does anyone have a diagram showing how they are interconnected ?

Thanks
Mike