Pretty sure the gu patrols have 3 or 4 points..
2 on the middle row and either 1 or 2 in the rear..
As Mr said the problem is the 50/50 split seats for the 3rd in the middle.
I did talk to an engineer in Adelaide and he said he's happy to approve with a nut welded to a peice of 2mm sheet about 150mm square stitched to the underside of the floor..
And have a bit of steel folded up to cover the split.
A few hundred bucks and was good to go..
Have since lost his number but if you jump on your state government website you should be able to track down a local engineer.