Very old school technology. They could be spec'd with different compressor wheels, however, it is basically a throw away turbo because not too many turbo vendors carry parts to be able to properly rebuild them. No real way to ID what wheel it has as they typically did not have any external identifying marks unless the shop engraved the specs on the compressor cover. IMHO, I would stick with a Garrett or Borg Warner based turbo if you are looking for longevity and ease of maintenance when the time comes. One last thing, if you did decide to run it, and it were to mess up, by the time you found a shop that could repair it, the hassle and money it would cost to rebuild would not be worth it. I recommend Garrett, T-netics and Borg Warner technology vs Mitsubishi turbo technology.
Just my O2s worth.
Patrick