Yes and no. I want only locomotives that the road actually ran, with correct numbers. NYC did not have six axle diesels (other than passenger units). They definitely didn't have a DD35! Their hood units didn't have dynamic brakes. (other than a single GP35)
PRR hood units did have dynamic brakes. They also had cab signal equipment on the side of the short hood. They never had a GP38.
Some things must be done correctly from the factory. Some details can be added by the modeler. But it is essential that the obvious items be done correctly from the factory.
Tom