Started working on the battery relocate this afternoon. Picked a spot and got the thing mounted, so "phase 1" is complete. This is the rear edge of the trunk, pretty much dead center. If you have the bracket that DDM sells, there's exactly one spot right about there where it will fit and mount up level. Had to unbolt and slightly mangle the heat-shield above the muffler on the underside to drill my bolt holes and attach lockwashers/nuts under there, but it all went back together fine.
Now I have to sort out how to run the cabling