since you seem to be going for a prototype correct look, i should add a few points about that photo.
1) the illuminated numbers on the headlight were removed when the Mars light was installed and the head light was changed to a dual bulb/ reflector internally.
2) the marker lights shown are close, but not correct.
3) the font for the number boards is correct by ever so slightly undersized.
3) both a swinging and fixed cradle for the bell are valid for the NKP Berkshires and frankly i've seen both on #753 at various times during its lifetime.
4) one NKP practice i believe i will ignore... they painted the bell yellow.
...everything else should be fairly accurate.