Factory glove box. I added the crossovers by removing the glove box, making holes for the wires, and screwing the crossovers in place. I have more pics I can reference in a few days, currently out of town. I have a cd changer in the glove box currently.

 

Pics of power wire through the firewall for a 2001 Accord Sedan

1/0 wire is blue in upper left, you can see another hole in the upper right with a single gray wire

I route the power wire up before coming down to ensure water doesn't want to wick in, while also building in some slack for future flexibility.