One thing not mentioned yet is the payload of your truck vs. the actual fully loaded weight of either aforementioned TC's. In the glove box should be a sticker showing the maximum size camper for that truck. My neighbor bought a Chevy DMax 4WD with the sticker showing a 1200 pound max on camper loading. He did not get the H.D. My guess is you will be overloaded from the start unless you do some suspension, shocks, wheel, and tire upgrading. Doing the math will tell the tale. Many times it's easier to just trade the truck for a 3500 or better than to throw about the same amount of money at upgrading. Many people ignore any weight restrictions and have a great time living closer to the edge. The 35 inch tires on the 2500 truck below have a 3860 pound load rating; so, 7720 pound load rating on the rear axle, which is rated by Dana as 11,200 pounds. The wheels are steel with a very high load rating. The rear suspension has 8 leaves: 3 mains, one thick lower overload, 3 upper secondaries, one 3" lift spring, longer U-bolts, and 4 Stable Loads. My camper is 2650 pounds, loaded. My point is, it took many years and a bucket of cash to get it up enough to carry the loads I had in mind. Over and over I have carried 5000 pounds of crushed rock in the short bed of this truck. No problem.
'01.5 Dodge 2500 4x4, CTD, Qcab, SB, NV5600, 241HD, 4.10's, Dana 70/TruTrac; Dana 80/ TruTrac, Spintec hub conversion, H.D. susp, 315/75R16's on 7.5" and 10" wide steel wheels, Vulcan big line, Warn M15K winch '98 Lance Lite 165s, 8' 6" X-cab, 200w Solar