I already have a monoblock amp under the drivers seat.
The 4 channel amp will not fit under the seat.
The LOC is massive i doubt it will fit behind the headunit.
Pic below with the two amps the smaller amp is the one i have under the seat at the moment.
I'm going to run 4 gauge to distributor block then 4 gauge to the amps.
The distributor block can also take 4 grounds so its best i get the amps close together.
100 or 120amp fuse off battery 50amp fuses for each amp.
The LOC has signal sensing and a remote out to send to the amps.