I am not an OMEGA expert at all but will try to give some input...lets hope the real experts chime in later
rocket science and 7750 movement in one and the same sentence that is rare there might be some issues with subdial distances, depth of date window etc but in principle it should be possible to get close to the 2015 version 8the original 57 should be more difficult given the difference in movements)..
I guess there is already quite a few reps with two subdials out ther at the moment however inaccurate in one way or another