There is a plastics molding company here in Omaha that I've been working with to have an aftermarket set of VX splash guards made from an original set of Japanese mudguards. If there was enough interest I'd consider having a batch of a hundred or so cubby inserts made as well. (After a lot of searching I found a set of splash guards and I do have one of the discontinued bins that I'm saving for my VX whenever I find one I really like enough to buy.)

Either way, the splash guards I imagine are definitely going to be over their original retail cost (I think, I have no clue on yen to USD conversions) and I'm guessing the bins would probably be twice as expensive as the original Isuzu bins as well.