I'm currently searching for a 38-40' diesel pusher. I've been told to definitely to stick with Cummins: more techs can work on them, cheaper labor and parts and less time for parts to arrive on scene. Years ago we had a 340hp Cummins in a Damon Astoria and had great luck with it. I've seen some nice 2004 - 06 coaches but they have a Cat and that makes me a little leery. I'm a widower getting ready to go out fulltime and just looking for some advice. Anything would be appreciated. Wil