Where do these brake line bolts go?

I see this brake line set sells for the 66-70 B body.



Where do those three bolts install?

On my fuel line clip set there is the black colored bolt/clip that mounts where the line bends around the rear frame rail (inside the wheel well area). I'm assuming one of these bolts does the same for the driver side rear frame rail?

I guess my main question is what's the right attachment that mounts the brake line to the rear frame rail?

On this persons car there is a clip holding the line rather than a bolt/clamp. Is this correct?

Should be a bolt/clamp combo right there.

I recently r+r some brake lines on a 69 b body and the pictured spot had a clip. They were the factory lines that came off.
There were no clamps on the brake lines, fuel line had the clamp on the shock cross member but the fuel lines had been monkeyed with.

Here's where another one goes if your brake line goes under the frame. Some models stay on top of the rail.