I removed the third row seats after fitting a long range tank and spare wheel carrier. I used the LR two piece false floor from a 5 seater to fill the gap and match the carpet. I was lucky to have in my possession the false floor and associated hardware from a previously owned 5 seat D4.
The resulting under floor cavity is great for spares, tools and other "good" things that a bloke might need. Later a flexible water tank may be installed.
I pulled the seats myself but they are heavy and awkward.

