Not a GT350 either, not even a S550, so I'll have to post a picture of some typical Aim Solo data from a track day. I've datalogged slightly higher numbers. MPSS tires in 285/35-18, little 12.4" front brakes.
1.14g (left)
1.30g (right)
0.98g (braking)
0.31g (acceleration - what do you expect from a 4.6L in 3rd gear?)