I am going to replace my factory hu on my 2002. I have the JBL sound system and its way too outdated and everything needs to be replaced. I am thinking about replacing the hu and using that amp to power the speakers. I am trying to bypass the amps but use the harnesses that go on the amps and connect that to hu so i dont have to totally rewire the system. I know the amp for the rear channels are right below the stock hu. Has anyone done this before and have a good strategy for doing this? I just want to replace the whole JBL system as easily as possible, I also have an aftermarket Alpine component system in the front and a subwoofer in the back.