NEED Help with motor replacement for a Bush Hog 2052 that has the Courage 20

[BHE]

My dad has a Bush Hog 2052 mower that has the courage 20 and it shot craps. They dont make that motor anymore I need a replacement. The mower has 1.125 D X 4.3--3.382 with a 1/4 key. I am having trouble finding a replacement motor. Any help would be appreciated

 

[ILENGINE]

Lets start with the model and spec of that engine since the Courage 20 was made as a single and V twin... I am thinking you have the single but need to be sure.

And please go back and delete your other duplicate post to help avoid confusion with people trying to answer in two separate threads.