Hey Nick,
I just had the Amp and Sub professionally installed last week. For anyone in the Allentown, PA area I would highly recomend A&S Installation, they are very professional. They were able to get the lead from the front speakers out of the factory amp. This appears to be a full range connection. I also had them Dynamat Extreme the front doors along with Tac Mat by Dynamat. The dynamat has given the system a pucnch I have heard only in $10,000 plus systems. Best thing, no rattles at any volume. They did a great job and also custom mounted my amp inside of the spare tire so you don't even see it.
Lots of luck with your system!
Craig