I'm looking to re model my battery bank too.
Whoever did the stereo/wiring/battery bank/electronics in my boat previously must have been named curly, moe, and Larry.
They take up almost my entire rear lockers, no space for ballast.
And access for maint is a SOB.
What is the equivalency in 6v, to match, or give more amp hours than the 8 12v that are back there?