I love my LTI-S dual disc from Monster. They make a flywheel and use the new 2014+ LT1 dual disc clutch from GM. It has a very smooth feel, perfect pedal to me, and if I need to replace it, I can get it from a GM dealer. It's not a cheap setup, but I'm really happy with it. It's also rated to 700 ft-lb if I recall correctly...
You can buy direct or they also have a dealer network where you can save a few bucks as well...
http://monsterclutches.com/c6-corvet...reet-c6-clutch