
The Porsche alphabet reserves the letter R for very special sports cars: R for responsive and refined but most especially for racy.
Engine and Transmission
3.4 liter 6 cylinder
Power: 330 hp
Performance
0-60 mph: 5.0 seconds

Source: Porsche
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For performance the car received a new custom exhaust system for optimal sound from the large V10. Official information about the BMW M6 horsepower has not been released yet, however guessing from the name PD550, it’s probably 550 hp. This is accomplished by simple engine tuning, adding a full exhaust system, and road tests. All of Prior Design’s vehicles are TUV tested and approved before purchase to ensure they meet all traffic regulations.