Had an alternative luckily another drive ordered, in which I could see in advance, this really does not fit in so original a chamber because it has an integrally formed
Hanger possesses (the now remade in mounting the drive using the included nut sense), but my initial assumption was then confirmed yet:
Sawn bracket and drive fits easily into the snap-in my clock. Trying to say, the "old" clock is not the problem!