That was what I did on my Duster. I came to the conclusion that it was just a big hassle to put the battery in the trunk so I designed a half size battery tray and used a half size battery under the hood. I don't need a master cutoff switch and the wiring is much easier. I'm now thinking of moving the battery out of the trunk on my Coronet. I can get rid of a bunch of heavy welding cables and simplify the wiring for the alternator by moving the battery back under the hood.