Using the drivers seat as an example...
And do you have three or four points?
The bottom of where the drivers seat belt mounts to the car on your right, the left hand side will bolt to the subframe.
At the rear, the seat belt mounts straight behind the seat for three points, for four points, these mounts, and the seat belt mounts at the side of the car also...
Lol, i didnt explain that very well...