I'd be interested to see how well a machine translation of something like this turns out. I'm a Japanese translator so I've seen quite a few, shall we say, questionable translations based off of machine translation, but it is getting better. I would offer to help but unfortunately I don't have the time for something like this, although I could potentially help if you had a few questions.
I also own a couple of Japanese books about Macintosh modification and the 2400c that were published in the early 2000s, but I'm not sure where they are at the moment.