Maybe I can rig up a Sofa in there. or take out the rear seat and put a La-Z-Boy in ha ha. I had a Chevy cargo van once that I bolted a recliner into the back. It wasnt perfect but it was kind of cool. POS throw away I found on the side of the road, put some thin strips of metal along the sides, screwed em into the wood and bolted it down. It would move a bit taking corners though ha ha.
The hardest part was finding a spot where the metal was still strong enough to hold it..... so many rust holes you could see the highway lines while driving....but what do you want for $700?