The lightest weight DIY rear seat delete bar none.

I never really considered a rear seat delete kit because they all seemed kinda heavy and expensive for what they were. I had to take out my rear seats to install the corbeau harness so i decided to make the lightest possible delete i could think of and remove everything possible including the rear seat belt retractors and the speaker cover piece. 3 pieces of 1/16 inch ABS did the trick and home depot sells a 4 pack of 2x4 sheets for $57. The hardest part was lining up the speakers, which i considered deleting as well, but they weigh practically nothing themselves. I used a heat gun to mold the rear deck piece. i first traced it using the stocker, then cut it with large kitchen shears. Laid it on top of the rear deck and used the heat gun through the trunk to mold it over the baby seat anchors. That allowed me to take it out and put it back in exactly the same spot to mark and cut the speaker holds from inside the trunk. The rest was just measuring and marking holes for a few bolts to hold the pieces in place.

Initially i wanted to also replace the side pieces in the rear with abs, but that was more trouble than it was worth, so i cut them to fit in with the plastic i had all ready installed. If i did it again i'd have just left them installed and cut the plastic to fit over them. Planning to paint them black to match. All told i took out 50lbs. i'm including the rear trunk carpet/board, rear trunk plastic as well as the drivers seat belt. I doubt i put back 5lbs including the corbeau harness. The rear seat belts are heavy! Worth the trouble if you are after every ounce.

I drove around for a few days with everything removed and the exhaust noise along with my rear gears whining was too much. You'd be surprised how well such a thin sheet of plastic muffles the sound and it can't weigh but 1/2 a lb at the most.

cleaned it up a bit and painted the interior plastic black. I added some rivets because those pieces just wouldn't sit flush no matter how much i heated them which just urked me. It's not perfect, but it looks pretty good. Also added some edge trim along the bottom to make it look more professional. If i were to do it again, i think i would have done the bottom in two pieces and riveted them together in the middle. one 4 foot piece doesn't quite reach and leaves a 1/2 inch gap on each side, but only a tiny bit in the front. Plus rivets look cool.