juan,
yes, only the 04 -05 plastics will work. Also the Suzuki rmz250 04-05 will work. If you have not allready found out that the 04-05 kawasaki green color is different too! I found and bought Acerbis Flo- Green plastics for my conversion because I did not like the stock color green one. The Flo- Green is the same as the newer kawasaki green (really bright).
Check out the color options for the Suzuki 04-05.
Ryan