I stand corrected. You guys are right. There is no auto Z06. They only come in manual, and have lots of problems with sticking clutch pedals. It is to the point that people are changing the fluid out once a month. Also the 6L80E apparently shifts faster, but is overall slower due to more parasitic loss from the transmission itself. There is rumors of the paddle shifted 6L80E being tested in a Z06, but nothing official on production or even testing. I found a pretty good thread about it on a Corvette forum. Here's the link:
http://www.corvetteactioncenter.com/...ad.php?t=93791