Basketcase mounting description and pics
There's a little more on this "mod" here:
http://www.toyota-4runner.org/5th-gen-t4rs/112281-rotopax-roof.html
The included mounting hardware comes with 4 plastic rail clamps. I cut 2 of them up and ground the rectangular blocks with the carraige bolt holes, so I could use them inside the factory rails. I purchased longer carraige bolts, spacers, and washers. Finally, I ground down the long sides of the plastic wing nuts, to clear the basket.
The factory rails are not parallel, so the front took more spacers.
Pictured below are the front left mount (top view), the rear left mount (top view), the front left mount (side view), and the rear left mount (side view).
Show us more on how you mounted that basket. Specifically the rail mounts.
There's a little more on this "mod" here:
http://www.toyota-4runner.org/5th-gen-t4rs/112281-rotopax-roof.html
The included mounting hardware comes with 4 plastic rail clamps. I cut 2 of them up and ground the rectangular blocks with the carraige bolt holes, so I could use them inside the factory rails. I purchased longer carraige bolts, spacers, and washers. Finally, I ground down the long sides of the plastic wing nuts, to clear the basket.
The factory rails are not parallel, so the front took more spacers.
Pictured below are the front left mount (top view), the rear left mount (top view), the front left mount (side view), and the rear left mount (side view).