1968 Tonawanda 327 harmonic balancer pulley bolts

[1cuda]

I'm about to commence the reassembly of an April 1968 327 with a single belt lower pulley and need to find the three correct bolts/ washers which hold the pulley to the harmonic balancer.
Has anyone got pictures of head markings for what I need.
Thanks in advance
Frank.

[KevinW]

I am curious about these headbolt markings too.

I have WB bolts (fine thread) on my 9/30/68 Flint 327. Have spare AS and AT bolts (as well as WB). So would like to know correctness for those too.

Pic of WBs:

[1cuda]

Thanks for the information, even though mine is an extremely low mileage original never been apart engine, it was fitted with air conditioning early in it's life and they installed a double belt pulley and changed the bolts.

Anyone else have any input?

[Mike S]

 I believe it was JohnZ that mentioned there were 3 suppliers of fasteners, so the headmarks can be whatever was in the bin at the time, and often mixed.

Mike