Fuse boxes on equipment are typically nothing real special. Unless you have some reason to keep it all original I would recommend looking into universal type of replacements. What other parts are you looking for besides the fuse box? It is a new enough machine I would think you could still get parts through a dealer that sells and services Toyota equipment, if you have nobody locally it may take a phone call or two with some other larger dealer outside of your general vicinity to find someone willing to deal with shipping you the parts, but still easy enough to figure out.
I find quite frequently that replacement parts for equipment is easily available through dealers, but more often than not I can't find anything online even when searching for the exact part number. A lot of things just aren't mass produced enough or replaced often enough for a company to bother with listing online. Older equipment where you can't get things through a dealer are different as the aftermarket industry will begin to take over at that point.
