POWERBOND 20% UNDERDRIVE POWER PULLEY KIT TO SUIT HOLDEN CALAIS VE SIDI LLT 3.6L V6 TO 08/2010This Powerbond Race series 20% underdrive balancer kit suits Holden vehicles fitted with Alloytec LY7, LE0, LW2 & SIDI LLT 3. 6L V6 engines. This Underdrive balancer kit produces more horsepower by reducing parasitic power loss from driving engine accessories including alternator, power steering and air conditioning and the smaller diameter harmonic balancers reduce inertia for faster engine acceleration. The Powerbond SFI Race harmonic balancer