Originally Posted by kkreit01
In order to significantly improve the sound, you will have to spend a lot, or scrap everything. It's not easy to upgrade. All the speakers are crossed at the OE Amp. There is not a full-range signal in front. You can easily replace the dash speakers. This will help clean up the highs. The front doors are a major pain, and will take an amp and processing to improve a lot. The rear doors are drop-in full-range. I've spent a lot of time on mine in the past few weeks, and I'm still far from happy.
I replaced the dash speakers and rear doors and it cleared it up some but it sounds like the stock amp is holding them back and they can go much louder.
I want to get a aftermarket amp, but it seems like a PITA to do.