I've been tuning this Torch Red Z06 for awhile. Got it down to a 10.48 @ 149mph. Trying to break it into the 9's... but I don't see it happening for awhile.
Tuning can get you anything really. You could probably push that F1 car to about mid-7's if you really looked at the gears and all that nonsense and spent time on it. Hell, I shaved my Z06 down to 10.41 from like 12's after all the tuning. Just work on it.