Spark Plugs & Leads Cables for Holden HSV LS1 V8 Commodore Calais VT VU VY VX VZ January 21, 2024sparkcables, calais, commodore, holden, leads, plugs, sparkadmin Ignition wire set for all Holden and HSV LS1 5.7L V8 motors, c ompatible with NGK RC-HLK808S, d oes not include aluminium heat-shields. Ruthenium HXT spark plugs. The ultimate high ignitability spark plugs from NGK.