Wow, I didn't know they made 4 cylinders. I don't get out much though... I thought the pistons were tiny in my old 1000cc Suzuki 4 cylinder (1983 SJ410).
I'd be down for basically a hardshell tent in the back of one but I don't think I'd go for the full(half) motorhome setup.
What about something like a Delica? Seems like they'd be a bit more capable on and off the road.
I found this site but it might be tricky to translate or have anything shipped.
https://buyee.jp/item/yahoo/auction/...recommend_list