Hello, glad to see a new kei forum, the more resources the better! I recently got a Sambar Dias van and promptly put 1500km on it in 6 weeks by driving aimlessly just for enjoyment. I also started a FB group called Subaru Sambar Dias Van US owners chatroom, and centralized some Dias resources - feel free to use them!
Welcome to the forum! We've talked a bit on the chatroom group, and you've shared some pretty great resources throughout there. Hopefully as this place gets more organized we can start bringing some of them over here, as well.