360 oil pan gaskets….One piece, 4 piece??

This one seems to fit this pan.

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It does do away with 4 potential leak points.

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Since this was an MP “Crate motor”, I don’t know if the oil pan was an in house MP reproduction or another aftermarket manufacturer like Milodon.

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The steel liner and embossed rings are a nice touch

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The big question is… have we stumbled onto a great discovery that you already knew about ? Is this gasket already a common fix for leaky 360 pans?