Does anyone have any hands on experience with rear ladders for the FJ Cruisers and 4Runners? I have a 3rd gen, I use my roof rack a lot for gear and I really want to get a ladder setup but 3rd gen ladders are $300 where as I can get a FJ ladder for $80 shipped. I'm curious as to how different/similar they are. Both look like they mount similarly on top. But it's hard to really see in the pictures.