he did a parts balancing, he said since it was originally individually balanced it would not need to be balanced as a complete unit unless i wanted it. heres the email he sent after he finished
"Turbo's done- turned out absolutely awesome. I had a slower-than-normal week at the shop so while your compressor cover was being machined I gave the turbine housing some attention. I smoothed out the inlet a little and repaired one of the manifold mounting holes- the threads in that particular hole was little on the weak side. Even when a bolt was threaded the entire was through it felt a little "loose" to me. By polishing the inlet it also exposed some of the heat cracking in the metal below- don't be alarmed.
$150 for the rebuild- I ran short on the upgraded thrust plates and when I ordered them last week I received four of the wrong kits, so I rebuilt it with an Genuine MHI thrust plate instead. It will have the same durability as a new 20G from Mitsubishi. Turbine replacement was $55, compressor was $75, and the machinework to the cover was $50 as I had guessed....bringing the grand total to $330"