So I'm pretty sure this will work but just checking.
I have a Stinger 0 gauge amp kit that I will run off my battery to a power distribution block.
Battery ---0 Gauge Wire + Inline Fuse---Distribution Block 0 gauge in/two 4gauge outputs
Distribution Block Output 1 ----4gauge---- 1 Farad Capacitor ----4gauge---- 750w RMS Mono Amplifier
Distribution Block Output 2 -4gauge---- 400/4 Amplifier
Throw out some ideas on where you would put everything and why.
Going to have the amp in the middle section of the Sub box behind the rear seats...thinking of putting the distribution block inside the drivers side storage compartment with the capacitor...400/1 amplifier under the driver seat...crossover locations unsure.
Or would putting the Capacitor before the distribution block work better...probably...0 gauge probably too big though.