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I loaded to imgur, here is the direct link https://imgur.com/gallery/yMAGq
So did the lip on the top of the radiator fix the whistle? Mine sounds like it is coming from around the drivers door. So I wonder if that radiator fix is changing the wind pattern somehow. It would be good to read the official Holden fix on this with the part numbers etc. Years ago you could get the service information bulletins sent to the dealers about all the fixes. Or maybe a Holden tech here could fill us in on the info. It would be good to go to the dealer and say Holden has a fix for this.