 The SC757 package creates 757 horsepower and 777 lb-ft of torque when paired with the LT4 of the Z06.The Callaway Corvette package also includes emblems, badging and plaques bearing the Callaway name as standard equipment.Callaway provides a three-year, 36,000 mile warranty on Callaway components, which also covers any GM-supplied components that fail due to a failure of the Callaway parts.