German tuner 9ff plans to modify the Porsche Carrera GT to push out over 900 hp by the use of twin-turbos as well as other methods listed below. This will put the Carrera GT in Bugatti Veyron range, but will not quite hit it’s numbers in terms of power. It does however weigh much less than the Veyron (3043 lbs. opposed to 4162 lbs. for the Veyron,) so performance numbers could theoretically be better than the Bugatti.
As far as styling goes, the concept shown doesn’t really do much for me. It certainly doesn’t proclaim it has 912 horsepower. A quick list of enhancements include a sound-adjustable full exhaust system, (minimal) aerodynamic styling, twin-turbos, upgraded exhaust manifolds and camshafts, new air intake, ECU upgrade, and 19″ wheels.