911 GT2 (997) "HD" vs 911 Turbo (997) 6-speed Race 1 Cam 1: GTBOARD.com http://www.m5board.com/vbulletin/e60-m5-e61-m5-touring-discussion/137368-supercar-shootout-2009-may-gtboard-com-lp640-lp560-4-m5-touring-m6-porsche-997-gt2-jaguar-xfr-e39-m5-ess-supercharger-more.html
997 GT2 "HD" vs Porsche 911 Turbo (997) 6-speed Race 1 Cam 2: http://www.m5board.com/vbulletin/e60-m5-e61-m5-touring-discussion/137368-supercar-shootout-2009-may-gtboard-com-lp640-lp560-4-m5-touring-m6-porsche-997-gt2-jaguar-xfr-e39-m5-ess-supercharger-more.html
911 GT2 (997) "HD" vs Lamborghini LP560-4 Gallardo: GTBOARD.com Race 1: http://www.m5board.com/vbulletin/e60-m5-e61-m5-touring-discussion/137368-supercar-shootout-2009-may-gtboard-com-lp640-lp560-4-m5-touring-m6-porsche-997-gt2-jaguar-xfr-e39-m5-ess-supercharger-more.html
HD: 911 GT2 (997) "HD" vs Lamborghini LP560-4 Gallardo: GTBOARD.com
http://www.m5board.com/vbulletin/e60-m5-e61-m5-touring-discussion/137368-supercar-shootout-2009-may-gtboard-com-lp640-lp560-4-m5-touring-m6-porsche-997-gt2-jaguar-xfr-e39-m5-ess-supercharger-more.html Lamborghini Murciélago LP 640 vs Porsche 911 GT2 (997) by Hans Dahlbäck Tuning consists of +0,1 bar (1,3 bar total), other catalysts lighter aftermarket wheels, sequential style operated shift with stock clutch and gearbox:
http://www.m5board.com/vbulletin/e60-m5-e61-m5-touring-discussion/141437-supercar-shootout-august-2009-koenigsegg-ccr-evolution-nissan-gtr-bmw-m5-porsche-carrera-gt-ferrari-599-gtb-f1-porsche-911-gt2-997-lamborghini-lp560-4-gallardo-jaguar-xfr-more.html HD: Porsche 911 Turbo (997) 6-spd by HD vs Porsche 911 GT2 (996) 484 RWHP
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