Sorry I took so long to get these pictures, I had a few late days at work.
Looking closely at the brackets it looks like they are a separate piece from the seat mounts. So if you find a donor truck you could simply just unbolt the fold flat floor from it and install it in yours (provided you have the holes) This could be a very simple mod for you…. So here are the pics, I saw that another member posted pics of his fold flat floor so I just focused on the mounting brackets. I hope they help and I’m sorry about the terrible quality.