[2010_5thgen]

no there is no evidence but the odds are with us that this is goign to be used. look at the cts v and the zr1. same motor just detuned. and the camaro normally has the vette motor as the v8 and its detuned so odds are a 6.2 detuned to 400 hp for the v8 model.
nothing in stone , just common sense