Rear seat compatibility

Older thread I know, was maybe hoping someone might have the answer, My car never had a rear seat when i got it, had some aluminum delete for when it was drag racing, I am currently putting a rear seat back in, I see the hooks for the top of the rear seat. but there is nothing on the bottem to retain the base, is there supposed to be a similar hook style for the bottem?

Thanks in advance,.
In Dusters, I have notied there can be a difference in various years, in the frame of the rear seat and this where the floors "hooks" are placed to hold the bottom of the etc. Sorry I have no pics to show it.