Onyx Performance wanted in on one of the hottest rides of 2012: the Porsche Panamera. The tuning shop attached a new front bumper with mesh grilles and extra vents, side skirts, fender flares, 22-inch rims, and a reworked bumper with a diffuser and fancy new pipes. The diesel upgrade gets a bump to 350 horsepower. The turbo? Make that 620.