2013 Porsche 911 GT3 Rsr Spotted

Spies over at the Dutch magazine autoweek.nl, have caught Porsche’s 991 based 911 GT3 RSR, putting down some hot-laps out on the test track. While most on the web reporting this spotting are calling it the 911 GT3 R, one of our more knowledgeable Porschephile members tell us this is in fact the GT3 RSR. Follow through for more details!