Chances are, as they are road legal, you might JUST get away with the filter as well, though I would be inclined not to risk it..
But sure the cans alone will be absolutely fine ( legal bit.. and please, this really is just to cover my arse and I REALLY believe all will be fine and speak from much and repeated experience when I say that .... but if you blow it up, fall off, get eaten by rabid apes or anything else happens to you or your bike cos you change the cans , sorry but you do so at your own risk !
! )
Now.... as an aside, I very often use all sorts of aftermarket cans on my Y2K bird and it has been spot on and no probs :-