Sears, M/W, Western Auto, and a lot of other big-box hardware outlets had house-brand engine exchange programs back in the dark ages. It's kind of like buying a reman 350 engine from Auto Zone or one of the other discounters now. You get an engine from whatever contractor managed to submit the low bid for a lot of engines. No accountability, other than maybe getting another low-bid wonder if you raise enough hell about a bad one.
Jerry
