Yeah, there's one 10mm bolt near the front of the large panel (just behind the 2nd row seats), just like they use for the smaller free version of the panel and then 2 self tapping screws that just go into the plastic panel in the rear. This alone is probably going to sway me to go with the smaller free option. It's a bit of a tough decision though as the discount they're offering on the large panel is pretty significant.
They have a separate video that shows how to install the larger panel on the new page for that panel:
Product page:
The Large Side Molle Panel for Toyota Land Cruiser offers even more storage and organization options for your vehicle.
www.kaon.com.au
Installation video: