Ford Lehmans have been put in a LOT of boats for more than 20 years. It would be hard to think any good desiel mechanic
couldn't do the job. They are not that special. Finding a good mechanic is mostly asking around and checking references
You really want one within an hour of your boat
. Most will charge travel time if they are any good. The best mechanics I've ever used did not work
for a marina but were independant. Some of the worst ones I know of work
for a marina. The "Great Lakes area" is pretty big.