In the hour or so today that it *didn’t* rain, I yanked the engine/gearbox out of the 200SX.
I then seperated them both, removed the turbo from the engine and took the exhaust off the turbo (stupidly, there is a nut on the turbo elbow that you can’t get to with the turbo attached to the engine!)
The turbo appears to have very little play, about 1mm back-forth, and almost negligible side-to-side.