I won't be able to get my 03 manual for a few more weeks, not sure if this info would be in there or not though.

My 03 has the nav system with THX and all that, just had some questions about what they put in there. Does anybody know:

1) Speaker sizes and location - Is it just the 4 doors and 2 in the back window?
2) Sub location and size - diameter/mounting depth/power handling....
3) Ability to add amps to the HU


Or is there a good site that explains in detail what is in there? I only got the car a few days ago and have been busy with Christmas and all so I haven't been able to get this info on my own yet.