I have a 2007 pony package with shaker 500. This system sounds great, plenty of midbass, but im looking for some more thump. I love the 6 disc indash and mp3. Im keeping everything factory. Im wanting to put my 2 L7 12" subs in the trunk. I thought of using the deck 4x6 speaker wires into a converter for my feed line. I can run my hot and ground underneath the car. My question is has anyone done this with their subs, kept headunit factory, and done it without taking out any trim or anything inside the car. I know this will work but I have to find sum switched power for my remote wire. Any suggestions?? Any advice is greatly appreciated!!