the guys on advrider an thumpertalk rave about this conversion... i reckon if you can get a gsxr can for free its worth doing ...u will save a lot of weight and becuase the gsxr can has all the legal mumbo it gives the guys in the states a chance to get away with it (if that makes sense)
an end can for a gsxr must cost horrible money though so unless u get one for free it aint worth doing