Off Road Action, which is a vintage offroad site based in Canada. Evidently the driver/owner of this vehicle is/was one Todd Shelton which, unfortunately, is too common of a name to track down on Google and doesn't come back with anything connected to Baja or Datsuns. He supposedly raced this vehicle in the B1K in the early '80s.This is a very limited post as unfortunately there isn't much to go on. Just a quick Facebook post by the website
This B210 looks pretty cool all jacked up and ready to go. I'll try and track down some more info on it if I can.