Nope, those are both cast CIS pistons, 'normal,' and 'S' ... the Euro RS or Carrera piston is a slipper-skirt, forged, conventional, low-dome, 8.5:1 piston with two valve relief cuts.
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Warren Hall, Jr.
1973 911S Targa ... 'Annie'
1968 340S Barracuda ... 'Rolling Thunder'
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