Sorry! Not sure how Lexpower's picture of the three switches got into my post??? It looks well done Lexpower. The pump addition should keep these older Challengers running for many more years. I see C18 engines in marine and industrial applications in the 6-700 hp range all the time. There is nothing out there in the 12-13 liter range that is going to compete in the long run. Biggest thing is you are not married to Agco for parts and service.