The factory stereo is decent but I find myself longing for MP3 playback and smoother sound. The treble is a little harsh and the bass is eq'd a little boomy without enough low mids to add punch. Anyway although its the nicest factory system ive had im curious about replacing it and have a few questions....

1. how does the factory stereo come out? Details?

2. What type of kits are needed to install in the crossfire? Crutchfield.com has no kits for Mercedes/Crossfires... whats up with that?

3. Speakers: If I ever want to change the speakers, what is involved in doing that? Details?

Thanks for any INFO