Porsche 911

3.0-liter engine 60 miles air conditioning all-wheel drive antiroll bar Auto Show became standard body brakes built bumpers Butzi Porsche Cabriolet car's Carrera 3.2 Carrera Cup Cars North America chassis compression ratio coupe debut emissions evolution factory Ferdinand Piëch Ferdinand Porsche Ferry Porsche five-speed flat six four-wheel drive Frankfurt Auto Show front and rear front fenders Fuchs alloys fuel injection Fuel tank capacity Fuhrmann gears horsepower intercooler lightweight look manual Matt Stone miles per hour Motor option package performance Porsche 911 Porsche AG Porsche Cars North Porsche decided Porsche's pounds production car race car rally Randy Leffingwell rear fender rear seats rear spoiler rear wheels rear window rear wing Road & Track seconds sensors shift six-cylinder six-speed Slant-nose Speedster Sportomatic sports car styling suspension Targa Tiptronic top speed torque transmission trim turbocharged U.S. cars U.S. models United valve weight Wheelbase