How much does everything weigh? I was told that the rear seat didn't make much difference, and I didn't think so either. I said I would never do it, just to keep it an full interiored car. Well, I started taking out components. Seat bottom which weighs hardly anything but then the seat back, all the brackets, and seat belts the weight starts adding up. There was this huge pad below the seats, it reminds me of the lead vest they make you wear durring X-rays. Next I'm going to get a heat gun and remove all that heavy sound deadening material. I've got to go to work tomorow, but I can't stop. I never liked people in my back seat, it's not that type of car. I'm also debating rear speakers.