The 08 Vettes are LS3s, not LS2s. There's a big power difference between the LS2 C6s and the LS3 C6s, and it shows at the track and on the dyno. Just FYI.
Except for that new LS3 time (there's some debate over it being he "supposedly" retuned his car to stock after having it tuned), the LS2 still had the quickest 1/4 times, both stock and bolt-on. So thus far, the LS3 has been king only on the dyno. It should be the quicker and will at some point as soon as the drivers figure out the TM while stock I think.