Turbo Leaking Oil

[Glennman]

I have oil leaking at the oil connection to the turbo (2002 MCI Series 60), and it's starting to run down the corrugated looking tube. Not that I think that if this is happening that the turbo needs to be replaced, but if I did replace it (I'll be looking at play, etc.), is it possible or practical to replace it with an improved version, or does that involve a whole bunch of other adjustments or mitigation?