ok, before I buy my system I'm curious of how I get 0 guage from the front of the car to the back? Also, is it ok to put subs in the back with a rstb? And If i need a hole drilled in firewall for the wire where can i get that done? And what is that site that shows how to take the door panels out, and back seat out, and install an aftermarket hu?

 

There is a multi tiered drill bit, I think called the "unibit" that should work for drilling the hole in the firewall. Check the FAQ's at the top of the audio forum for install tips and links.