I'm upgrading my system too and what board did you find that would work well. I'm interested in the best ideas to get my amps and dual battery system to fit well to save as much room as possible.
thanx
A very efficent class D or H amp will be easier on your battery. I'm going with two Deka AGM 92 amp hour batteries for the stereo. You could get one very large amp hour battery like a Kinetik.