Your machine was electrified at some point. The two holes in the back of the pillar were drilled when a motor was first mounted. The motor is missing it's mounting bracket where those unpainted spots around those holes are. If you can't attach a new bracket you may have to find a different motor. You will probably have to fabricate a mount to attach whatever motor you use to the machine anyway.
Someone added an extra guide on your faceplate. Find a picture of a good faceplate and as long as yours looks the same you can remove the extra guide.
I hope this helps,
Rodney