I check Katech website for new products and there a clutch with twin disk for LS2, LS3, and LS7 (excluding ZL1).
-For C6 Corvette including Z06 (excluding ZR1)
-Twin disk clutch
-Clutch disks and pressure plate from the ZR1
-Aluminum flyweel with 6 bolt pattern for standard LS engines
-Includes slave cylinder
-Includes pressure plate bolts
-8lbs lighter than the stock Z06 clutch
-Drives like a stock ZR1 - stock pedal feel
-Proven to 700rwhp
-No neutral noise or chattering
-All of the benefits of a twin disk clutch and none of the trade-offs
KAT-A5198 Fits all C6 Corvette including Z06 (excluding ZR1) $1,499.99
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This is what I got from Katech site.