If it's got the original cylinder heads on it, the valve cover bolt hole spacing will be wider on the bottom than the top. I believe they changed to even-spaced valve cover bolt holes in 59. Those original heads with the offset holes are fairly scarce and expensive, BTW, if a restorer needs them.
Jerry

"It is better to be silent and be thought a fool than to speak and eliminate all doubt!" - Abraham Lincoln
Cringe and wail in fear, Eloi- - - - -we Morlocks are on the hunt!
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