For those contemplating these slip on's, be aware there are two types of hangers. Mine originally came with the symmetrical strap on the right and I had to reshape it to pretty much exactly the one on the left to get the clearance I needed, I didn't know there were was an alternative at the time. If ordering for the FJ, make sure you order the "B" strap.
I suspect bending the strap so far eventually caused mine to break.
(https://c1.staticflickr.com/1/589/31544871951_b30dc310f1_o.jpg)
Noel
Good info Noel, thanks. It also helps to make sure once strapped, the can cannot move or wiggle. This will cause a fatigue failure from all the moving around.