If you need them, could just be worn rings. I mean if your all about getting new pistons then you also may want to disassemble the motor and get the block checked. It may need a little work. I'm just saying find out what bore your going to end up with before you go buy some piston's for a stock bore and end up with the wrong size. Also some one correct me if i'm wrong. If you take the motor apart, wouldn't be who of you to go ahead and get everything re worked and put some new bearings in.
Don't decide on what your going to buy till you know what you need. Also your caps lock is on.