Well as soon as thenew year rolls around I am pulling the trigger on a 2006 cresendo 8386 with the 330/950ft lbs cummings workhorse. Does anyone own one of these? If so whay kind of mileage are you getting? I plan on towing about 10K in an enclosed trailer all over the country IE charlotte to california 3-4 times a year. are there any problems I should look out for. Are there any upgrades availible for the engine to make more power if I need it? Just any general feedback and advise would be great.