Iowa is littered with grain elevators. As an outcome of deregulation and railway consolidation many elevators found it best to have their own equipment to position hoppers for loading.
The tags under the window indicate ownership is Countrywide Grain Terminal. They own the elevator this is parked next to.
Research by Robert

suggests this might be ex-
C&NW 4144.
EMD GP7's and GP9's were constructed with high short hoods but many received after-market chops that look like this.
I also like the AC job, too, if it works, more power to'em!
Don't forget the fuzzy dice!