Following Jason advise from BSW, I decided to have a professional install my Stage 1 and Sub package. I dropped off the car yesterday at 11:00 and pick it up at 6:00pm. It was not even done. They only had the sub and 1 speaker installed. They said it's a hard to get the speaker into the door. So it's a thought for those who want to try in the future. With the sub and 1 MB Quartz speaker in there, my initial though is the sub powerful but it overwhelme the speakers. Most I hear is base. I have a feeling I have to replace the stock amp also. But this is only my initial thought. Hopefully everything will balance out when all of the speakers are replace and the installer tweak it a little bit. I will post another review once it's done today.