250 and 400 parts interchangeable?

[gotburned]

Hi,
 
I have a 1993 gsf 250 in need of a new shaft drive and sprocket (previous owner put the wrong sprocket so the output shaft have been grinded). Im having trouble finding these parts but easier for the 400.  I was wondering if anyone knows if these parts are interchangeable?

thank you,
joe

**sorry some might have already seen this post in another area, just taking an advice from another member to post here as well**