Assuming you travel an average of 5-10k per year (that is FAR more than most RV's) it should last you at least another 15 + years. If maintained well I wouldn't give it another thought.
One of the great things about the Fuso is the many people all over North America who can work on them if...
No real reason other than we wanted new seats. The originals were 20 years old.
In the end it does not appear the new seats without suspension are as good as the old seats with. Doing it again, I would just buy Fuso seats and keep the bouncy suspension.
2004.
Intriguing discovery. I am not so quick to judge. Quite possibly a field repair. Been there, and done some creative things to get back on the road. You use what you can get your hands on.
Fuso as an ambulance, hmmm... I hope it is not life threatening.
I once heard a story of a Fuso ambulance that picked up a woman ready to deliver her first child. Turns out instead of going to the hospital they just dropped the kid off at school.