Help! What brand engine should I buy?
I''d say go with the Yanmar, they own the marine small diesel business for good reason. Be willing to pay a premium for Yanmar if you need to, you''ll get it back when you sell the boat.
You might reaet this post wherever Sanatana owners hang out, as you may be able to find some owners who have completed similar replacements and learn from their experiences.
Good luck - hopefully you have $7-10,000 in the project plan for this line item.