As I said before, I'd share a photo of the backboard of the car. This piece of MDF is actually intended to hold the two amps in the boot. But also works great as a place to mount sh*t.
Its messy, but manageable. I'll eventually remove the amps from the ground block and have them on their own grounds. I just didn't want to drill on the panel just below the MDF (where the hanger is mounted) because I was scared the fuel tank was behind it, and that would be a bad time hahah. Hopefully the pump doesn't cause too much electrical noise for the amps, if it does I'll consider making a noise suppression board to reduce it. In time, though
EDIT:
This board is also not final, I have done a lot of drilling and screwing and sh*t to it, so I will be cutting out another one in the future and redoing the power wiring for the amps. This is perfectly fine for now