I have finally had a chance to view it...
Its quite good.  Not great, but very good.  On the plus side, most of the archive footage is brilliant, and the interviews with the likes of Bruce McLaren, Denny Hulme, Mark Donohue, Peter Revson, etc. are priceless.  The down side?  Some of the archive footage is so grainy and poor, it bears wondering why they used it at all. The editing is choppy and the narration is a bit strange too, especially because Sam Posey is always so eloquent.  The script he works with is too "See Spot, see Spot run" for my taste.  Overall worth the dosh just for the footage and interviews alone.
Fax