Thanks for all the responses.
Steve and BeachDude your info was golden. I can stop stressing about what to do.
I have to wait until Monday for the tech to start on my coach. I really hope it's the right engine. I've been living with that dog of an engine since day one, been thru the Rocky MT's twice and we survived.
I hope that this does not change the estimate price of the repair.
I've checked with Banks Diesel and they do not make any up grades for a Cummins 2010 engine.
Thanks again for all the responses.
2010 Fleetwood Discovery, Cummins ISB 350, 2016 Jeep Rubicon or 2005 Jeep Rubicon.