I have a mix of letters on the heads of the head bolts that came out of my 54 six cylinder (see photo). Can anyone tell me whether these are 'correct'? I have W, M, P, and F. Many of them are underneath the valve cover, but not all. I have no reason to believe that these are NOT right. But the head was off in the seventies for repair, and one never knows.
Thanks.
2021-12-10 12.48.25.jpg
Thanks.
2021-12-10 12.48.25.jpg
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