I've just bought a beautiful new car. A 2004 Infiniti G35 coupe w/manual transmission. It came with the premium package, which means the Bose 225 watt powered speaker deal. It doesn't sound *terrible*, but could certainly stand improvement. The thing is, the dash does not have a standard DIN cutout - the controls are all over the place, visible through specific cutouts in the dash, as is the CD slot. What I'd like is a few things. First, I'd like to replace the head, if possible, with a MP3/WMA player like I had in my old car. Second, I'd like to add either XM or Sirius satellite radio, but not through some ridiculous cassette or FM connection. I want a hard wired connection. Last, I would like better bass response and cleaner, crisper sound. The Bose setup is warmer than I'd like, and not as punchy and clear as I'd like in the mids and higher frequencies. Anyone have any ideas? I've not really considered budget yet - just trying to think about ideas and get a general sense of what is and what isn't possible (within reason, of course).