F50 Interior

I posted thin in nissan/infiniti too, but really looking for answers

Interior Questions

1- will the heated cooled seats out of an 03+ work in an 02?

2-  is the in dash 6 Cd changer out of 03+ plug and play in an 02? There  were other posts on this with no definite answer, has anyone done it? I  have ordered one but just wanted to know when it gets here. I will post  my results if no one answers this.

3- will the 04, or 05-06 Radio work in an 02? (with the xm feature?) what will need to be done? 

I  do plan on changing my screen to a high resolution screen to switch  from the Navigation, AC factory controls to the DVD player, but am  wondering if i can just get the newer radio controls and have xm or  should I just to run a separate unit.

I was thinking about just  putting a 15 inch monitor in dash, and customizing the button control  layout. This will be something I will have to pay to get done, probably  after i get most of the car together. Just a thought. Any answers,  pointers, instructions greatly appreciated. Thanks to all

Might want to put this in the "Electronics" section.