Nah it's just an Ametek 112483. I was looking at the private label Mytee LX motor or a Rotovac ZX motor but they were much more expensive and or hard to obtain rotovac doesn't like to outright sell their ZX motor. I think both of them are made by Ametek anyways though.
Well compared to it's original specs sure, but many of the better machines out there utilize two vacuum motors. I considered that but I'm not sure I could fit a 2nd vac motor in it. that and the amp draw.