If you go down the replating path, buy yourself a set of pistons and you send them off to the replater and they will match the cylinder bore to your pistons.

There are a couple of places local that can replate, but I have been told that the best are overseas.

If you think that the cylinder is suitable to reuse, measure your cylinder and then find the piston to match. Off the top of my head I don't know if the piston types have been measured.