North Harbor Diesel in Anacortes did my repower in 2011/12.
I was 100% pleased with the work they did and the value received.
They are a full service shipyard. They will take on your repower with a team of technicians and all the correct equipment to do the job right, and on time.
They are not a bargain basement shop, or the low bidder. They do a great job, they bill for honest hours, and they do not take shortcuts.