Another Courage gone. Briggs swap?

I have a 2010 Cub Cadet with 43 hours and an air cooled Courage 19hp. When I say air cooled, you know what I mean. I spoke briefly with Kohlers rep who wanted my original receipt (from 4 years ago) to even consider a warranty repair. Well, no receipt so no warranty.



I'm going to replace the engine. Do I hold my nose and spend 550 for a new courage and make a seamless swap or do I buy a Briggs and Stratton for around 450. I know the header pipe needs to be swapped out for the muffler to work. Am I looking at any other modifications to make a Briggs work?



Please give me some suggestions on what way I should go with this one.