DUDE
MITSU turbos are stupidly easy to rebuild... Just get some good craftsman snap ring pliers and you can be done in less than 1 hr.

I can get you a rebuild kit for that for like 50 bux shipped from this place in Ohio.

Just gotta take it apart, change out the bearings and o-rings from the kit/etc.

Take your turbine shaft and compressor wheel to Turbo diesel place and they'll balance it for ~50 bux... Take it home mark it really good before your take the compressor wheel off.... reassemble the turbo with the new stuff from the kit.... Line up the compressor wheel with the turbine when you're tightening it back on and its as good as new. I've done this with good results every time. Rarely do you get a case where it's still bad... Worst case, it still smokes, you can just get a new center housing and swap everything over to that and line it up (I think i got a spare if you need)