Need to know which is the number one post on a 1975 Buick 3.8 odd fire v6 distributor?

I was looking at my Chilton book from the 70's , at the Buick section and it shows a

diagram for a V6 engine :

firing order ( 1 - 6 - 5 - 4 - 3 - 2 )

the distributor rotor turns CLOCKWISE , distributor at front of engine

the marked # 1 position on the distributor cap faces towards the FRONT of the engine

The engine cylinder locations are numbered :

6 - 5

4 - 3

2 - 1

-fan-