Wet Fins System

Anyone know where I can find a supplier or retailer for the Wet Fins System box?

Got a board in a few days ago for repair with this setup, and pretty much cannot find anyone who I can purchase a new box from. By chance, one of the shops Im affiliated with, the owner just so happens to be from Brazil where I see most of the boards with this fin system come from, had 1 rail box just laying around for awhile now and says they are nearly impossible to find or get. I need a center box.

If I cant find this setup, either I can make the rail box work or replace with FCS or Futures…rather just have the right box.