Roll Bar mounting HELP??????

I have this same roll bar waiting to go into my car, my question is how does this thing mount with the main support bars going into the hatch floor area. It has bolts that go through the sides of it to mount to something?? I want to know what I need to mount it to before I cut the wrong part of the car. Has anyone installed the same bar???
I think that you need to remove the side speaker grill long plastic pieces with the carpet on them.
YOu will have to cut the fiber glass at the edges and underneath are the supports for the frame cut only enough fiberglass to install the supports.If you remove the wheels in the rear and the plastic inner fenders youcan see the frame.






