A common issue I see with mini trucks, especially acty's, around here in Northern Japan is the hinge pins rusting out on the tailgates (rear and side's). I had one that I was repeatedly tacking back on, but it finally came completely off, somewhere unknown. I've started calling around junk yards and checking auction sites for a used replacement gate, but no luck yet. I'm sure I'll come across a used one, but in the meantime, was wondering if anyone has successfully made their own pin or, even their own tailgate? The latches on mine are in great shape, I think it would be simple enough to make a door and, use the existing hardware.
Never had this problem on my Acty for the past 12 years, but I live much further down south than you at the Pacific coast and usually no snow in winter, no salt on the roads.
You got any go to websites for used parts? I've checked the usuals (yahoo auctions, rakuten, goo) but there's not much out there these days.
for used parts beforward is one of the bigger ones in Japan, more that 3 mio parts on stock https://autoparts.beforward.jp/ for private sales check also Mercari, getting more and more popular https://jp.mercari.com/search?keyword=Honda acty