they have a kit u can get at
http://www.srswap.com this is their description:Our trunkmount battery kit has everything you need to move your battery: polyethylene marine battery case, case straps, 20 ft. of positive cable with connectors, 3 ft. of negative cable with connectors, H-bar battery clamp, two rubber grommets, and cable straps. It's the easy way to transfer battery weight or clean up your engine compartment.
$65