Need to make some final decisions about the best cure for my engine problems.

Options a

1. Have current 6354 turbo Perkins rebuilt by Pacific Detroit Diesel.
$3600-3800, plus 10% markup to my engine specialist who can set up the deal and
will handle transportation to and from the reman shop. Will need a new manifold
for another $1k, and new innards for the aftercooler......(close to free since
it looks like the aftercooler failed to bring down the engine and I bought the
aftercooler several years ago from my engine guy).

2. Brand new Perkins Sabre tubo engine, about $14k

and here's where it gets interesting.......

3. Brand new Perkins Sabre naturally aspirated engine, about $10.5k

Especially with the super deal my engine guy is willing to arrange on the
rebuild, I think I'd just automatically do the rebuild rather than the new
turbo engine.

But, the difference between the rebuild of my old turbo and the N/A Perkins
Sabre makes it a tougher call.

Anybody running a 6354 NA? I'd lose about 30HP, comparing the maximum ratings
of the two engines, but I typically run about 1800-1900 RPM with the 165 turbo.

I might lean toward the NA engine if I'm not going to lose anything more than
about 1/2 a knot, (the Perkins specialist says I might even go a little faster
with the NA at 1800 than with the turbo at 1800....hmmm).

Another factor: Wife says there is another boat in our future. Not necessarily
in the next couple of years, but certainly prior to retirement. She has a few
items on her boat "wish list" that she thinks are missing from our present
boat. General question: If you were considering a 25-year old boat, would you
be much more likely to buy the boat and/or pay a few thousand extra if the
engine were 4-5 years old vs. a 25-year old engine with 600-800 hours on a
thoroughly documented rebuild?

Such a quandry.