<p>These are the three greatest water cooled 911s, each a true engineering masterpiece. But which to choose? Andrew Frankel gets to decide. </p>

These are the three greatest water cooled 911s, each a true engineering masterpiece. But which to choose? Andrew Frankel gets to decide.

<p>These are the three greatest water cooled 911s, each a true engineering masterpiece. But which to choose? Andrew Frankel gets to decide.&nbsp;</p>

First Among Equals: Porsche 911 GT3 RS 4.0 v 911 R v 911 S/T

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