I have a 99 EC200, ours are about the same (I think).
Halls Cycle has helped me.
Depending on what part you are looking for there are crossovers with KTM of the same year rage. Example, my front brake M/C piston kit is also the same as on a KTM 00' 200.
The biggest issue you will have is parts numbers and crossover part numbers, which is what I am finding to be the real frustration.
Do a search on here, there are a few post about interchanges. Parts can be had, you just have to look a bit harder to find them, if you don't want OEM.