That's funny, I just moved mine from the firewall and put it back under the floor board. the battery holder was a homemade box with a tarp strap to secure it. There were two reasons I removed it, one the battery would drop acid dust (battery powder stuff)onto the engine and the second was when I would sit on the hood the hood would deflect enough to contact both top terminals on the battery and cause a hot spot where I was sitting.
