HD: Porsche 911 GT3 RS vs Porsche 911 Turbo manual (both 997)
Full event here: http://www.m5board.com/vbulletin/e60-m5-e61-m5-touring-discussion/127290-latest-gtboard-supercar-shootout-audi-rs6-lp560-4-997-turbo-997-gt3rs-m5-more.html Porsche 911 GT3 RS vs Porsche 911 Turbo manual (both 997)
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