I'm sure you're not talking about my JT62!  
That CT26 has a little in and out shaft play.  It was working/boosting just fine when on the car last.  A little over a year ago...
The only reason it's on the bench is because I replaced it with a 57 trim.
I am currently swapping one of my spare motors into my 89 so I can sell it.  I'll need that turbo for that project.  However, I do have another one.  Its on my 89 right now and I do not know anything about it because the car wasn't running when I bought it.
If you're not in a huge hurry, I can let you know the condition when I get everything swapped around!