Just fitted a set, very happy for $895 and received in just over a week.
Just a quick photo to throw up in case it helps someone with the install in a series IV.
Attachment 56158
I mounted my fixing points more towards the front of the vehicle using the baby seat bolts and the front cargo tie down points. I would have only picked up one of the rears if I had it mounted further back and didn't want to modify it to much.
Still feels solid as and I think it will help with the cantilever when all the drawers are pulled out.
Cheers,
Bob