Its my firm belief that falcons inline 6 is a much better engine, always has been. You only need to look at the NEW VE commodore against the FG Falcon, Commodores new ecodrive engine sacrificed nearly 40 kw to the Falcon and only used 0.1l/100km less fuel. Holden need to stick with the VZ engine i reckon and just develope it further.
Or even back further the to pre VL red inline engines, they seem very rough i know by todays standards but back in those days the engine back in the x series falcons was just the same, ford just stuck with it as previously mentioned so ahd a much better platform to perfect their power plants. Maybe Holden should have followed the same philosophy, would be interesting to see what that old red engine would look like today if they had.
Sorry guys i just like musing