Brutal, it is a big job but very doable. I would recommend the book by Casey, "Good Old Boat". It is an excellent book to guide through the process. I did a reinforcement of my bulkheads that I was pleased with, but it sounds like your bulkheads are too far gone.

Tom Montoya did a complete removal and rebuild of his interior, maybe you could reach out to him through this site. I guess my concern would be the condition of the rest of the boat. If everything else is good, then the interior refit would be worth it, if not.....

Tabbing in new bulkheads is not difficult, especially if you can remove the old ones intact as cutting guides for new material.

-k

:: Recently hauled out my boat so that I could do a bottom
:: job and other repairs that I had been putting off until
:: I could get it out of the water.
::
:: Noticed that some pre-existing decay (there when I
:: bought the boat two years ago) in the bulkhead where the
:: chainplates bolt in had gotten worse, to the point where
:: I can drive a skinny pick through the worst of it when I
:: push hard enough.
::
:: Looks now like I'm going to have to replace those
:: bulkheads. As I poked around a bit, it looks as if the
:: rot has affected almost every board inside the boat.
::
:: I'm contemplating completely replacing the interior with
:: new wood. Is this worth doing? Note that this would be
:: my first project on the boat that would actually require
:: cutting things out and glassing them in. I have some
:: experience with fiberglass from when I was a kid, but
:: not too much. Looking forward to hearing your advice.