The possibility exists that Cp's brackets may have come from a different vehicle or a different time period IF matching mounting holes don't exist on the bed crossmember that would align them to the tire position. Could these brackets come from a Stout or Hilux from the sixties thru the eighties, or even a non-Toyota vehicle? Like some of you, I have a number of the various painted South American "Teq" rubber flaps I want to mount, but my guess is that these were a one-size-fits-all local product, not from Toyota Japan.
With the intended uses for a worldwide pickup truck, it is odd that Toyota would not have prominently offered various brackets and rubber flaps. But they may have simply decided to leave that to the local producers.
Could JohnnyC shed some light here?