It is important that you have your information correct before you come in and spread information that is incorrect or not true. I have two 346xp oe and both have a 45 stamped on them. We don't know if that 45 is for cc's, different supplier or a different part number. I don't know of the history of these saws before I purchased them, but I know they have oem parts on them and strong running saws. I would have appreciated the courtesy of contacting me via pm before you come into my for sale ad and try to discredit me. Prove to me that these are 353 piston and jugs just by a stamping.