Not Ranked
The longest generally available stroker crank for a 351 is 4.0" so unless you have a Dart or Ford Boss 351 block the most you can get is 408 CI. There are exceptions to that of course but I kind of doubt the BSer you bought this from went to that trouble. FWIW.
Frank
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FFR - V8, Manual Trans, PS, Inop Wipers, No Radio, Gas Mileage so-so
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