Well, the casette player in my Maxima isn't working and I need it for my car kit to link up to my iPOD. If I end up needing a new HU, what should I be looking for? A double DIN unit or will a regular one work?

And the two speakers on the bottom of the front door are farting out rattly noises so I'll have to replace those too. What kind of speakers will fit and more improtantly what will sound good without costing a fortune (I'm talking less than 100 on the speakers). I don't really blast my music, I just want to be able to listen to it in peace.