Step by step instructions for removing the seat-backs from my 2024 Mitsubishi Mirage ES. This allows for so much more cargo room, which also lays mostly flat. An additional option, which I didn't do, is to remove the seats as well, then maybe get a board cut to fit the space. I chose to leave it all with some cushioning.
The next step to perfect it was to fill the gap at the leg room, and I found a cooler that was a good fit to fill that gap. I also installed an after-market center console, which looks like it came with the car, and a couple visor extenders, which are very necessary with this car.
Cooler: https://www.walmart.com/ip/Titan-by-Arctic-Zone-24-Can-Zipperless-Soft-Side-Cooler-Ocean-Blue/3719115377
Center console: https://www.amazon.com/dp/B09PHG5RRJ/?th=1
Visor extender (my drivers side): https://www.amazon.com/dp/B0C77BMRDH?th=1
Visor extender (my passenger side): https://www.amazon.com/dp/B08CVSTHNS?th=1