Looks like Nissan is fighting back at the new performance offered in the 991TTS with an improved GT-R with Ring time claimed at 7:08 (much faster than any current Porsche, save the 918)

http://www.autoblog.com/2013/11/18/2015-nissan-gt-r-nismo-595-hp-leaked/


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73 Carrera RS 2.7 Carbon Fiber replica (1,890 lbs), 06 EVO9 with track mods. Former: 73 911S, Two 951S's, 996 C2, 993 C2, 98 Ferrari 550