I'm probably not quite up to date myself, but from 12,000 miles away, I'll try to answer.
Only one of the B&A Geeps has been painted and put in service, #23 is at Bayway. Judging by the oil stains visible on the hood in a couple of photos, all is not well with the 23. Maybe this is what prompted them to get more modern power in the MP-15s.
So we have at Morristown, the awesome 18, plus 20 and 2354, 764 would also appear to be operational.
At Bayway there is Geep 23 and MP-15 2408, is the black SSB also still there?
In storage waiting for a call to service is the third MP-15. Also stored are the other Geeps and 3574 (serviceable) & 4204, plus 19 and 21. So still 5 Alco's on the property, though only 18 is active. Too many EMD's for this Alco fan, but as long as 19 gets preserved, I can still keep my user name!
There's only one Alco in NZ. 8-(