moved my batt to the side walls, mounted the hicas ecu to the side of the sub box, moved fuse box to a better fixed point behind amp but next to hicas ecu and done. box made to suit, if u want 1 done i can help y out if u in melb. any questions just ask.
oh forgot to mention, 10" sub pretty much is the only one that will fit this way, 12 is a real squeeze and will require more work.
pm me if u have q's or want a hand