Except when GMH put it in the VL commodore they cocked the cooling system up, and it constantly blew up the heads - no such problems occurred in the Nissan Skylines that were running the same engine. But you are correct, that 3l was a beautiful engine - in the Nissan. The Nissan Skyline Silhouette was my second car I ever owned.At one stage around that time, GM (Holden) Commodore production included a version fitted with a 3L "straight 6" sourced from Nissan... it had a lot of admirers!