I have the same bike but a 2005. any ktm 2003 and up will fit in the front and 2000 in the rear. my rear rim is from a 2002 ktmsx125. you will have to make a spacer for your front dics if your running the 310mm sm brake disc. you can go for front wheels older than 2003 but you will have to get the spacer kit to go from a 20mm front axle to a 26mm.
use the search option cause there is tons of posts about this subject.