So i'm prepping for an aftermarket sub and upgrade to the factory speakers while im waiting on the MIB2 flat screen upgrade to come back. The canton is just to weak for my taste as i like it loud and hard To keep the OEM head unit and run an after market amp setup you need a few things. As the head unit will have bass roll off at above 75% volume to protect the canton sub if you have one, it wont work well with an after market sub as you just wont get decent bass at high volume. You will need