That's SWEET. Great job. I want to add a RH start 10-series like that to the stable someday (for some reason that 'look' is growing on me). I like the early flywheel cover with the cast in grill. Don't want to mess with 'bullfrog' carbs however. Yours is one of the SDC equipped saws. Perfect. That one's in NICE shape too. Hard to believe people will throw things like that away. I rescued a LH start 10-10A from a dumpster back in 1992 or so. Gave it to my boss (a really good friend) as he used to tell me how much he missed his old 10-10. It had a broken recoil spring. Don't know if he ever fixed it. I hope he did. He had me replace the crank seals in the 031AVE that he'd owned since new.
Those early LH start 10-10's pop up on the local CL every once in a while. Same with the early LH start 10-10's. If I pick up a LH start early 10-10 (instead of a RH start saw like yours, or a Super 2-10 or other saw of that style) then I'll swap a RH start clutch, clutch cover, and 'cast grill' flywheel cover onto it. Not really any good reason to do it, other than wanting to have one with that 'look'...
That's the one Jim. It will bolt to most large frame McCullochs from the early front-tank 1-40 family through the CP125. Doesn't work on the SP105/PM105/SP125 though. There's another box-type muffler that ONLY bolts to the PM/105/SP105/SP125 type saws.