Thanks for the comments.
Has anyone heard of Osprey Marine Composite? Can expect they would have done a quality job?
Engine age, broken hour meter, and unknown maintenance is why I am thinking I need to budget for a refresh (not replace). This engine should have a life of 5,000 hrs in my mind before any rebuild. I have never had to survey a boat with an inboard engine (as this is my largest potential boat) but I doubt the surveyor will take an oil sample (and get it analyzed), cut oil filters or any other condition monitoring routines to help establish any potential issues. Plus if the engine just had maintenance, any signs short of an visual inspection would be gone.
Keep the post coming and I appreciate the experienced opinions.