Piston Swap

[Raptor]

As long as the pistons are matched to each other, it shouldn't effect the balance drastically. They basically will cancel each other out for the most part. You can do what you are suggesting with the rings as long as you keep them in exactly the same bore they came out of. You shouldn't need to hone anything. Not something I would normally tell people, but honestly there should be no reason you will encounter trouble as long as care is taken just as in original assembly.