Which timing chain cover?

That's how.mine is
72 cover
340 with forged crank with 318 int. Balancer.
69 water pump and radiator
And power steering.
Timing marks on driver side
T.D.C. mark on balancer on driver side.
as said hard to see , but do able.
I didn't know all that before I brought a new water pump and radiator.
I would have just bought a 70 and up
Pump and radiator had I known.
This site is Awesome to ask before you buy.
So many helpful people with tons of knowledge!