I have an ''04'' EX with the factory system. My only problem is I must have a... (1) - aux input for my ipod, and (2) - usb input for my flash drive, plus I want to clean up the mids and highs a bit more if possible. I have went back and forth with a complete overhaul, and leaving it factory, but I'm not fully happy. I also am a drummer so my space is pretty limited. I'm not sure how to hook Up my new HU to the existing system and still use the factory amps to power the sub and tweeters? Because I know that the EX has more than just the regular green harness that is in the regular LX models. All in mind without spending a ton of money since i don' have the space I can give up for hauling. Please give me your opinion's on what you think or what you have done. Thank You!!