i dont think there are zero's that fit the GTR. but we'll see what Nissan does with the Spec V. im loving the rivalry between porche-nissan-chevrolet on the ring
and i'm pretty sure the 599 GTO did the ring in under seven minutes, but nobody ever talks about that.
Yeah the rivalry between the 3 really is great to watch, it's a shame that most of the other major marques don't seem to be too interested in participating.
Also you're referring to the 599XX developmental racecar, which ran a 6:58.16, not the 599GTO street car. Pagani ran its Zonda R track car at the 'ring as well and managed a 6:47.5. The all time lap record of 6:11.13 was set in 1983 in a Porsche 956 with driver Stefan Bellof at the wheel (on a slightly longer version of the circuit mind you), a man whose driving style would make even Jim Mero seem relatively sane in comparison. He was killed about 2 years later in a racing accident while driving a 956.
Could you imagine a lap being a run a full minute faster than even the Apollo Speed's time? Sadly I don't believe there is any video of that insane run taking place.