I recently purchased a Proto 2000 E8(A&B) in UP colours, but lettered and numbered for Rock Island. The models are fitted with double steam generators.
I know the Rock Island obtained these units from UP and I am putting them back as UP.
Are the models correct with two steam generators and if so, when were they fitted?
If they were not fitted from new, or shortly afterwards,I will need to replace them with single generators as I model the steam to diesel transition period.
I'd check with the Rock Island Historical/Technical Society:
http://faculty.simpson.edu/RITS/www
or the Union Pacific Historical Society:
http://www.uphs.org
Thanks for the info. I suspected that the double generators were a later addition.
Looks like I will have to do some alterations!