nasa your PT6 overhaul costs concerned me. I didn't think I was dwelling that far in the long distant past!
So, I did a little homework ....... a colleague has a Pratt's, USA/Canada strip down overhaul quote on a first life PT6A-114A with 3,500 hours since new. US$126,000 total overhaul, repair and re work quote, which includes replacement of 58 CT blades (at $350 each less discount) and 58 rivets, damaged by sulfidation.
Email me for the overseas contact details.