I totally agree, mine, which is about the same as yours, is the third diesel pickup I've owned. Every one of 'em I hitch up to a trailer and head on down the road, just don't let it get too hot or run it at sustained full throttle. I've also ran several "big rigs" they come right off the showroom, go under a trailer, and head down the highway. I'm sure you'll love your truck as much as we all love ours!!!
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2001 Quad Cab Dually, ETH, SLT Plus, 275 injectors, Banks Power Pack half way in.