I ain't going to lose any sleep over it. That's what UGL said at the 'handover ceremony' for GWU006 today, so it's their problem. Someone else can ring 'em up and tell 'em.
In their recent press release (31 May) UGL said the most recent order of ES44DCi would give Rio a total of 160 locomotives.
I wrote to them saying Rio already had 159 units, and they came back saying they meant to say "169"
Since I forgot the CEYs (and LDPs), if you count the 5020s it would probably be correct that GWU007 is the 100th.
UGL vary in describing them as C44aci or C44acHi but they have quite different frames and bogies and traction motors but the same power equipment above the frame.
So when 9308 emerges, they will have built more AC units than NRs.....