Yes they do!
Simply put Yes.
You put it in there
Yes
No, headlights are different
yes, they have the same body panels
no
I bought a 2006 hood for my 2004 GTO and it fit perfectly. No problem what so ever.
Yes
Yes. Model years 1997-2006 are interchangeable.
it might... but you would want to contact your dealer just to be sure.
Both '01 and '02 headlights will fit the '02, headlights from '99 or '00 will not as they are longer and would not fit in the same space.
1997-2006 will fit.