[BR3W CITY]

If you've got bucket seats, my solution is always to build a sound enclosure that works as a center console, and build your equipment into that. It only needs power and ground wiring, and the stereo stuff is self contained, and removeable.

Bench seats take up the room in the middle, so glovebox mounting head units, mounting speakers/subs/amps under seats, or some build tight wedge boxes to tuck behind the seat.