the actually headlight
or do i need to replace the hood, bumper, fender, etc

 

the headlights fit interchangeably, all you have to do is some wiring to make them work.

 

any 'how tos' on the wiring process?

 

with proper proof that you bought legit the write-up can be yours from other more noted members.

 

Question about buying 2k2 lights, when you order them from courtesy or (insert cheaper place here) do they come with a ballast as well? Or are they strict replacement casings.

They are HIDs, so I assume you require a ballast?

 

they come with everything to install execpt harnesses and clips.