My wife and I are going to be new full timers hopefully soon. We will be purchasing a new, or maybe 1 year old, 38 or 40' Diesel Pusher. We have narrowed our research to Newmar Dutch Stars, Monaco Diplomats and Itasa Horizons. My question to you much more experienced RVers, is regarding towing a boat or SUV. Is a 40' diesel coach with a 330 hp Catepillar engine enough engine to pull a full size SUV through the mountains? The reason I ask is that every salesman says, yes no problem yet the New Dutch Stars have upped their engine size from 350 hp Cummins to 370 Cummins on a Spartan Chassis. For you experienced full timers towing vehicles, we would really appreciate your comments. Thank you!