Second Row Seat Anchor Point Positions?

[wild camper]

2017 SWB Limited
I’d like to install a second row of seats
Can anyone advise the dimensions of the of the positions of the anchor point captive nuts in the floor pan?
I can’t easily remove the floor load liner because the ply lining is partially covering it
If I knew the dimensions on the floor plan I could use a hole saw to expose the captive nuts
I’m assuming they’ll be 12mm like the front double seat anchor points

[Supra Stone]

Hello

How did you get on with this??

I have a baby on the way and am looking to do same thing, fingers crossed!

Thanks