I wanna change my oem fogs to 6000k white fogs. Do i need to to buy a new shell for it or do i just need the hid kit?

 

You'll need to sand off the yellow on the projectors in your oem fogs, requires baking, or you can just buy the clear jdm foglights

 

You actually can just replace the bulbs and get a HID kit, (need ballast).

But the light will not be 6000k white, and will not be oem yellow.
It will be a greenish yellowish blueish look. My buddy did it that too.
But the he did liek whitehorse said and sanded off the yellow part of the inner lens, then it was white.