Im about to do this and now that Ive hacked the box under the passenger seat, I have a better idea on battery dimensions.
Here is the process. As the op, I used a rotary tool. So much space...
I will use a VSR as thats what Ive ordered for my budget. Quite simple to change over to DC-DC later down the track.
I will run the cables from the Start battery under the console instead of the engine bay terminals.
Will update as I progress..
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