I also bought some time ago an Oracle with no real motor to speak of.
I am now using 2 Origin Live DC 200 motors connected in parallel using an Ultra drive and the upgraded power supply. Mind you I am driving the perimeter of the platter and NOT under the plater - this gives more torque using the small pulley. Otherwise you may have speed variance issues from the stylus drag effect on the Oracle.
Using the Origin Live system, I have finally managed to have quasi perfect speed with no stylus drag effect and using 2 motors and a passive pulley in the middle for better grip.
This Origin Live system would cost you some $950 english pounds using 2 motors. The Ultra control box is really excellent and has upgraded parts - but with the Oracle you may have a torque/speed variance issue unless you drive the perimeter.
I do not honestly remember how it was using one OL DC200 motor under the platter. It most likely is fine, depending on how much of a perfectionist you are. You should not hear the stylus drag effect variance as it represents a small speed variance.
Any event, Oracle will sell the motor and control & base for about $1500. That motor unit from Oracle is their latest one used on the MK V, I beleive.
So it depends how you want to drive the Oracle and if you are ready to compromise and tinker a bit.
You can also simply use a stand alone motor pod to drive the perimeter. Their are a few types available...
I would take apart the bearing and see if the trust plate is OK and the platter turns freely - otherwise its a strain on the motor drive...
Oracle can sell a new trust plate and seal so it does not leak oil.