64-66 Burb rear floor

[Wellwood]

I've read where apparently the 64-66 Burb rear floor could be either wood or metal. I've done a brief search online to find if there is a replacement metal floor...seems like the shipping would be astronomical. OTOH, if there are rear seats - are they safety mounted to the optional wood floors?

I also read that the 64-66 Burb is essentially built on a SWB truck platform, with minor modifications. Maybe some body mounts, perhaps rear frame 'horns' (?) and bumper supports.

I would truly appreciate your rear bed pics and experience please.

Just gathering info to better inform my purchase and potential project scope.