I searched, and it appears that most related threads are relatively old. Are there any local turbo rebuilders/retrofitters? I like to get a VF54 retrofitted with a EvoIII 16G/TD05. I'd prefer to do it locally if possible.
Midwest Turbo Connection in Hudson. They did an awesome job on my VF48. https://www.midwestturboconnection.com/Default.asp
I have had Midwest Turbo do work on a handful of stuff from machining compressor/bearing housings to full builds... always with great results at a fair price.