dersitrcitng my 98 speedfight?

hi i have a 98 reg speedfight that i want to get dersitricted however i am not sure that my model is the sme as the ones you are describing how to deristrict,it has the standard exhaust on it which i have already deristricted by cutting of the the pipe, but im not sure what restrictions my ped has got on it still i have heard some stories about it being the washer and the variator but im not sure what my model has, can anyone, tell me how i would deristrict my ped thanks joe