Found a priceless gem on the Erie, PA Craigslist.
Seller calls it a 1050, but describes a 1256.
Part of the descriptions says:
... THE UNIT RUNS GOOD AND STARTS UP FINE. I INSTALLED A MUFFLER ON IT AS IT DID NOT COME WITH ONE WHEN I PURCHASED
IT. THE TRACTOR IS TOO LOUD FOR WHERE I LIVE. ...
He posted a lot of pics, one of them being of the 'muffler'
Yeah, I guess it just might be "too loud" for where he lives.