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Following the famous 1973 F-model 911 Carrera RS 2.7, Porsche built its successor based on the G-model and it was called the 911 Carrera RS 3.0. With its 172 kW engine, it was the most powerful series production street-legal Porsche made so far. With its new 3.0-liter engine, featuring mechanical fuel injection, it was capable of 230 hp. While 1,580 Carrera RS 2.7s were built for 1973, only 56 Carrera RS 3.0s were built for 1974.
Southern California Porsche dealer Johnny von Neumann knew what his customers wanted, and a Targa top Targa 911 wasn’t it. With Porsche’s approval, he hired designer Nuccio Bertone to create a one-off 1966 Porsche 911 Spyder, in hopes of launching low-volume production. Just one example was constructed.  The engine incorporated a vertically-mounted cooling fan, a 9.1:1 compression ratio and two triple-choke 40PI Solex carburettors. Peak output was 130bhp at 6100rpm and 174lb-ft at 4200rpm. Transmission was via a Type 901 five-speed gearbox and single-plate clutch.