stupid question but does anyone know the specs of the headlights, what temp. are they and can you upgrade the light itself with the stock ballast for a hotter temp bulb, thanks

 

From what I understand, the ballast is capable of handling any type of HID bulb aslong as it operates at 35W, regardless of color temperture. I believe the stock temp. for the 2k2-2k3 Maxima is around or at 4300k, like most OEM HID used in various cars since it provides the most light output.