ZXR 250 footpeg brackets

After an unfortunate incident after some light rain, I need a new LHS mounting bracket for my footpeg/gearshifter. I was wondering if anyone knows if the brackets/rearsets for any other models are compatible? I'm expecting the 400 to be, but it would be easier if I knew I could get other models too (specifically hoping some of the kaneg rearsets might fit ...).
Is being able to bolt on the bracket all that matters, or could the other parts (gearshifter etc) just be wrong for the bike?
Is being able to bolt on the bracket all that matters, or could the other parts (gearshifter etc) just be wrong for the bike?