Holden Crewman VY VZ RWD 6/8CYL 12/2003-7/2006 (See Notes 133). Holden Commodore VY VZ Leaf Spring Rear (Cab Chassis) 6/8CYL 10/2002-8/2006 (See Notes 133). By lowering the vehicles centre of gravity, the unique and progressive rate coil design not only improves performance but enhances overall appearance.