OF COURSE, a standout feature for all 911s is the horizontally-opposed six-cylinder boxer engine that has become a Porsche trademark. Producing levels of power and torque most V8 engines would be proud of, the 3.6-litre flat six is a modern masterpiece, comprising leading edge technologies such as cylinder-specific knock control, dry sump lubrication, Motronic ME7.8 electronic engine management, an electronic throttle, sequential multipoint fuel injection with stereo Lambda control circuits and twin three-way catalytic converters. It goes without saying, however, that chassis rigidity, grip, handling, steering and brakes are also stand-out features of the 911.