I'm working on a 1952 GMC on a S10 frame with a sbc. I'm having trouble deciding what 12v battery to use and where to mount it? The original floor hole is blocked by the frame. The firewall area has air and heat lines there. If I put it in the truck bed it just kind of sets there in the open. I've read about the dry cell type batteries that could set under the front seat. HELP!!!!!!!!!!!!!!!!! Thanks