The Frankfurt Motor Show is just around the corner and Porsche is rewarding our patience by stripping camouflage from 911 prototypes.

The Frankfurt Motor Show is just around the corner and Porsche is rewarding our patience by stripping camouflage from 911 prototypes.

As you can see, the model will have an evolutionary design with a front end that is virtually identical to the current car. Despite the similarities, there are a number of differences beyond the A-pillar including new door mirrors, a smaller greenhouse, slimmer taillights and a restyled rear end. Overall, the vehicle is nearly 2.5 inches (6.4 cm) wider than the current model and rides on a wheelbase that has been stretched roughly 4 inches (10.2 cm).

As we have previously reported, the Carrera is slated to adopt a 3.4-liter flat-six engine with 350 PS (257 kW / 345 hp). Moving up the Carrera S will reward drivers with 400 PS (294 kW / 395 hp), while the Turbo is rumored to have an output of approximately 550 PS (405 kW / 542 hp). Regardless of what engine is selected, it can be paired to a seven-speed manual or an optional seven-speed PDK.

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2012 Porsche 911 spied virtually undisguised