Need help from the suburban community !!!

[slicks69burb]

Ok so I recently purchased my dream truck which is a 69 suburban and now I need help. My burb didn't come with the middle row seat and I am having a hell of a time locating one or even the brackets to mount it, I want to install a modern interior because the original bench up front was already replaced...So I guess what my question is, is how can I put in the interior from a newer style suburban without the middle row brackets ?