Are the pistons in a 360 press fit, or floaters?

I would just re-ring the 360 you have. pressing off pistons can be a crap shoot as to whether they can be reused. I havent been sucessfull at it yet...lol. Ball hones should be able to be located fairly easy, but I've also used the stiff 3 stone hones before with no bad results. If the bores are so bad the straight stone wont mark everywhere, it's not going to get really good with a ball hone anyway.