Needed: HO Scale Auxiliary Water Tender, for Union Pacific Excursion Train

[railbuffintx78559]

Hello everyone.  I am modelling the Union Pacific's current excursion train consist pulled by FEF-3 4-8-4 Northern #844.  The consist calls for an auxiliary water tender, 60 foot double plugdoor express boxcar, and a track inspection car.  I know Bachmann sells auxiliary water tenders, but not for Union Pacific.  Anyone have any ideas on how to get my hands on one of these tenders, as well as the other cars mentioned?

[GN.2-6-8-0]

None were ever produced in plastic.
Only one's you'll find available will be in brass as they used a tender from one of the turbines and these are difficult to find by themselves.
You might have some luck seaching around on ebay.