What Chris King Headset?

i have a 2007 Giant Reign and am looking at getting a new headset.

Does anyone know if CK headsets are compatible and what one i require?

well I have a giant XTC2 2004 and it takes internal (semi-integrated) headset, looking at the picture of the reign on Giant’s website it seems to have an internal headset as well, so Chris King won’t fit. They (still?)make their own internal one called the perdido but doesn’t seem easily ((at all) available, and frame would need to be modified.

Cane Creek, Hope or FSA internal ones should fit I think.