Meant to post these last night...
The mounts don't interchange anymore. Didn't even notice until then!
Old stator bottom is 8mm, new is 9mm. You can see the difference in pics. The top OD of the bearing tube is the same size so you might could swap stators (10mm OD on top)?
Stators themselves look the same, same layers and basic shape, and height.
I don't like the non-curved magnets either, but maybe there isn't much of a measurable difference in performance?