I messaged spike60 and I'm waiting on his reply now. I really want a saw that is all OEM. Eventually, I may mod the muffler and send it out to get ported. There are a couple I'm watching on eBay, but you just can't tell what you're really buying... What model Jonsered is equivalent to the 346 and 550xp? Jonsered saws look sharp... No pun intended...