The company has not yet confirmed output specs, but all sources appear to agree that it will offer at least 640 horsepower and 553 pound-feet of torque.

Porsche's upcoming 2018 911 GT2 RS could be even more powerful than first reported.

The company has not yet confirmed official output specifications, but initial reports pointed to "more than 640 horsepower" and 553 pound-feet of torque. An Automobile Magazine story now suggests the GT2 RS' twin turbocharged 3.8-liter flat six actually produces 700 ponies.

Responding to an inquiry from Jalopnik, Porsche framed all figures as "speculation" pending an official announcement. Journalists so far have only had a chance to drive pre-production prototypes.

In any case, the engine produces enough power to get from zero to 62 mph in less than three seconds. Automobile suggests the coupe tops out at 212 mph. In contrast, the GT3 hits 60 mph in 3.2 seconds and continues accelerating up to 197 mph.

The new GT2 RS is not expected to arrive in showrooms for another few months, potentially after making a formal public appearance in Frankfurt or Geneva.