LEVEL 4 12" C6 CORVETTE SINGLE DISC CLUTCH KIT - 775 RWHP/RWTQ
H.D. pressure plate, 12" sintered iron 6 puck disc, 28lbs SFI certified billet steel flywheel or a 18lbs light weight billet flywheel (your choice), pilot bearing, release bearing, and alignment tool.
To be a step above the Level 3 takes a heck of a clutch, this fits the bill. The Level 4 will hold 775 rwhp and take anything you can throw at it just like its lesser Level 3 variant. However, just like the 3 it will find the weak spots in the drivetrain of your setup.