who's towing with gas and 342 vs 373

All good info here and I appreciate all. to add to the info. I do have a fifth wheel with the typical height, mine is right at 13 ft also have pulled it cross country twice, once with a 2010 6.0 3:73, and a different fifth wheel with the same truck. both times I struggled a bit while climbing, but of course that wasn't constant. Wolf Creek pass, and a few others slowed me down, but overall, I had no issues. Now with the 6.0 and 4:10 that I have, we have done the west coast and multiple northern Arizona trips without issues except a little slow down while climbing. either way, a few slowdowns aren't a big deal. In addition, my local dealer has sold a few trucks that those folks went from diesel to gas with their order. AND OH, Peoria Arizona for our home. as far as the truck, most likely will step up to the 3500, I guess I am GM preferenced, new word of the day. Thanks have a great day.