The link I gave only sells tools and parts relating to the conversion of NMRA standard HO rolling stock and track to Proto:87 (exact scale-down of prototype) dimensions.
I don't know off the top of my head who sells E or F units with the Nickel Plate roadname; there are many manufacturers to choose from. If nobody's producing on in a Nickel Plate paint scheme, you'll just have to buy an "undecorated" unit and do the airbrushing and decaling yourself. Also, many of the better railroad hobby shops offer modeling services and would detail and paint a locomotive to match your preferred prototype.
It really comes down to what you want vs. what you're willing to pay to get it.
Ah.
Okers.
There's a train bridge not far from Fostoria, Ohio that has the Nickel Plate badge still on it.
I'd seen a -I think- F unit diesel in Nickel PLate colors, but when I finally had the money up for it, I couldn't find it again.
*grrr*
(Fostoria is 'around the corner' from where I was born.)