I will do an updated mod list at some point here soon. I have no idea what the internals are, the previous owner didn't do any of the work so your guess is as good as mine. Factory boost.
I was getting ready to put the exhaust manifold and turbo back on today and decided to inspect the turbo. Not sure how I missed this when I first took it off but there is a large crack inside at the wastegate.
So my previous statement of the turbo being in good shape was clearly wrong. Rather than fix this or buy another 30 year old turbo I decided to try out a stock RB25DET turbo. It's a T28, ball bearing, and water cooled. Should be a nice little step up over the old snail.