Amp location

If it is small, you can tuck it in behind the head unit. There is a fair amount of space in there. If that doesn't work you'll probably have to put it under a front seat.

 

Oh well-made Klipsch hi.poweref BT speaker or similar . I haven't ripped up cars in a few years to put in big stereos or anything I thought that was kind of a dying thing now but there is space depending upon how big and powerful and speakers and all that you're going with crutchfield is a good place to start but you can do it like anyway you want put the stuff in the trunk make the nice wiring rack and use all different color wires and LED and neon lights and it could go on forever Good luck

 

With the 12v located on the Rear passenger side under the seat, the closer you can stay to that the better, I have my mono block simply mounted to the floor in the back behind the passenger seat, Capacitor right next to it. I'd say no more than 18"-20" of 1/0AWG for each the ground and power. Currently have something comparable to a wall build, inverted 18" sub running on a 2000w Monoblock