So I bought my truck a few months back. The rear seats have a box with two tens in it, but with this custom box, they took out the bracket that actually holds the seat up normally. I am wanting to use the original bracket that would hold it up and create my own sub box at the correct height. I've searched Google for hours and there is no place to find the seat mount. Any ideas?

 

I'd go check a junkyard, cheapest and quickes way most likely.