cant answer your question about the battery box, because i did not use one. I built some home made ones. but here is what i used for battery cable.

http://www.ebay.com/itm/25-EXCELENE-1-0-...=item2a377e91ee

3520 pound race ready 1973 Street/Strip Dodge Dart - Stock stroke 440/727 10.49 @ 125.0 on 93 pump gas & ET Street Radials. More to come... ( SGT Miller) Proudly served 12 years in the US ARMY RESERVES support our troops