Is there a way to tell which generation motors my P3A has?

If they look like this, they're the original units...
upload_2016-10-4_13-53-33.png

If they don't then they're the revised "A" version
 
I'm reading things about newer motors that are better than the older ones?
They are the same performance-wise. If you decide to upgrade the motors, you'll also have to install the new version of the center board.
 

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