I took out the ugly splitting back seat, old crusty sound deadening and wornout speakers in my malibu today. I plan on relocating the battery to the spot where the back seat passenger sat. I also plan on putting in a 6 point cage. My problem is now I have a big gaping hole to the trunk area where I plan on putting a fuel cell. I think I'm going to clean up the area and then metal screw sheet aluminum to it. It won't look like a hack job when I'm done. I'm curious what other people have done. Pictures would be helpful.