You can't go wrong with kei mini trucks. The only down side is the 25 year old ones are still carburetor (can be a positive for some guys). Heater and a full cab. If i was gonna import another one i would get one with ac just bc it's az. All steel bed that can handle 350kg and an atv. One of the local fiewood guys went to one after beating the crap out of the plastic side by sides.
The 4wd is amazing on these little trucks. I replaced the stock tires with bias ply trailer tires. Does amazing in dirt, mud and snow. There's an overlook that i frequent and it's a 45°+ and i climb it in 4wd high. I'll have to find that video. It surprises a lot of people i show it to.
Parts are pretty simple from vendors in Japan and Canada. Even eBay in a pinch.