I have a raleigh SC200DX that I want to make more ready for heavier trail use. In doing this I want to change the headset and change the fork. The trouble I am having is determining what type of headset it takes. The website says it's an integrated threadless, but the frame looks exactly the same as the new venture 5.0 which says its a zero stack head tube, but whos specs list a 1 1/8 integrated headset as well. Does anyone know what kind of headset this frame will takes. Information will be greatly appreciated.

Thanks