The first road-going 911 Turbo was not the familiar 930 that entered production in February 1975. Nor was it the engine-less prototype that had appeared at the Paris Motor Show in October 1973. Instead, it was a one-off narrow-bodied mule that was subsequently gifted to Ferry Porsche’s sister, Louise, on her 70th birthday in August 1974. Built on chassis 9115600042, this 2.7 Carrera Turbo also pre-dated the prototype 930 that was shown in almost production-ready at Frankfurt show in 1974.