Under the passages seat

Troubleshooting
1

Hello, My name is Barry, hopefully you can help me, I’m replacing the carpet in my 3000GT SL . What is that box under for? On the passages side under the seat

2

What box??? Cant seem to find any box under my passenger seat :thinking:

3

I’m thinking it for a CD player that go in the hatch area?

4

It say on the side of it
Mitsubishi motors, MB9547?7

5

MITSUBISHI 3000gt OEM Amplifier Amp Infinity MB954767 ???

6

Thanks Brother, for the help