Timing chain cover and head bolt questions

I should have done a search, but all honesty I thought I was so mistaken. I figured I was looking at it wrong or hitting it wrong or something. I did do a search on rockauto for front crank seal then checked years available, it was all over the place from as far back as 1955 to 1991 so I made the wrong decision and Figueres they were all the same size holes in the timing cover.
My bad. Lesson learned... I hope. :lol:

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