sub woofer

Hey, all you audio savvy century owners. I’m currently planning a sub install for a 2003 century. It’s a 300w RMS 4OHM JL W0v3 10in with a pioneer amp that’s rated at 800w rms 1ohm, 500w rms 2 ohm, and 300w rms 4 ohm. My 3 questions are if you guys know a solid pass through via firewall (or will...

I'm looking for some help with disassembly of the dash/trim around the infotainment system of my '16 Regal GS and possibly any other input that makes this job easier. Not sure where to start to remove it so I can get my line out converter in and have access to the speaker wires/remote wire to...