Today I gutted the interior in my 92 Mustang hatchback. My plan is to run 1/0 to the hatch into a distro. For the power wire, where can I run the power wire through the firewall? I looked but I didn't see any unused grommets? If I should drill a new hole where should I drill it? For the speaker wire, I want to run speaker wire to each of the doors from the amp in the hatch. How can I route the wire from the hatch to the doors? Do I have to remove the dash?