The 1972 911 2.7 Carrera RS  M472 Touring was equipped standard with the Ducktail but could be ordered with the wing delete option (a quite seldom occurency). As such if Porsche calls this 991 GT3 "Touring" , my guess that it would be historically inaccurate (for what is worth). 

This is how the wing delete on the 911 2.7 Carrera RS , looked like. Very cool and understated , notice no scripts either which were also an option at that time. 

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