Engine overhaul and shops question

[enginesrus]

And what about the barn find of the large engine for a multi engine application? The whole reason for a barn find would be to avoid the $100,000 plus overhaul cost. And with any barn find it could have been Joe Blow whom ever that last did the overhaul. In the end its just up to the AP or P to approve it for use. That is how I see it rule wise.
I guess no one here knows how a well known in the past outfit, handled their big round surplus engines used for back up replacements, for their fire planes?


I would just like to add some of my latest findings. And in response to how a nice experienced shop would be at doing overhauls etc.
https://www.youtube.com/watch?v=T117Y8FHe_0 this is interesting.

And on this one at 31:10 an inspector talks.
https://www.youtube.com/watch?v=rvkEpstd9os

Maybe its best to let the real "professionals" do the work, you know the place that manufactures
the engine. Yes lets talk about all the top experts with an A&P or P that are so qualified. ((I can't get rid of the underline!!!!))!

https://www.youtube.com/watch?v=LlPtMVijIzs