2005-2009 PONTIAC G6 V6 COUPE & SEDAN. EIBACH PRO-KIT LOWERING SPRINGS KIT. 2005-2009 PONTIAC G6 V6 COUPE & SEDAN (DO NOT FIT CONVERTIBLE). 2005-2009 PONTIAC G6 V6. 2008-2012 CHEVY MALIBU 3.6L V6. It´s our legendary spring system that dramatically improves both a vehicle´s performance and appearance.