I doubt the new 636s would work with the new Big Piston Forks. Not exactly sure but I would think with different diameter forks would make them incompatible.
It's not about 636 vs other. It's about year ranges...98-02, 03/04, 05/06, 07/08, 09-12, 13/14 (maybe 15 as well...not sure on that one)...get the idea?So the 636 version of the ZX6R is really distinct from the non-636 ?