It had a 44mm P&C. I replaced it with another good used set, but they happened to be 42mm. I haven't tried yet, but I think the original cylinder will clean up nicely. I can get a 44mm Meteor piston for about $40, but not sure it's worth it since I'm going to sell the saw anyway. It runs great as is and the P&C on it are in great condition.
The tank is plastic.
I've never seen a bolt come through the case and into the side of the muffler. The muffler was seperate from the saw at the dealer, and told him wasn't a saw muffler, lol. Then I saw another like mine on eBay and realized my mistake.
I looked at Baileys for the rim sprocket and didn't find anything. I bought a new Carlton spur/drum on eBay for $17 shipped.