Griptec offers this 10 bolt 10 rib 2.38 inch diameter pulley for the CTS-V or Camaro ZL1 LSA 2009-2014 that allows you to overdrive your supercharger by 26%.
SNOUT MACHINING REQUIRED TO CLEAR THE INNER PULLEY DIA.
10 bolt pulley requires the
LPE 10 bolt hub sold separately.