Look at this water neck used on various Pontiac V8s from mid 1960's right up thru to early 70's... and be satisfied the unit is what what you need.
-
This when fitted ..it points to the LHS basically straight out sideways. .. there is also another that the neck goes nearly Straight up..
-
This is for PONTIAC engines only.. not Chevy or Olds etc... just Pontiac.
-
Note.. these may be cast or Alloy.., ..... depending on stock supplied.. all fit and work the same.
They come with a gasket.