Subwoofers in a cruiser mopar

There's other ones look up audio for atv/boats they come up, or bluetooth to rca if you want a headless stereo that just runs off your phone etc..

KICKER KMC2 | KICKER®
Is that’s interesting.

Quick link to the instructions; https://www.kicker.com/app/manuals/marine/sourceUnits/2016_KMC2_Rev_F.pdf

2-5/8 mounting hole, 4 inches deep, 1-1/8 inch above mounting surface. So it sticks out towards you a bit.