OP, yes the 2500sub you posted specs on would be a very good vehicle for a 4ton TT.
Now look up the same specs on a say, new Expediton or 6.2 Sub or Tahoe/Yukon.
You can still stay within the numbers for hitch weight with weight distribution with a similar size trailer.
That was the original premise that wdhs were created for. But they’ve now gotten categorized as a necessity regardless of tongue weight or payload. RV industry is good at selling things to people! Lol.
Now look at the tow ratings, and mechanical aspects of a new Expediton and you’ll see that aside from a slightly lower rawr (9.75 Ford axle is rated 4800lb and real world is a 5000 lb axle all day long), the rest of the vehicle, engine power, transmission, chassis/brakes is all = to or better than a GMT900.
Plus a 6.2 GM or Ecoboost will absolutely run an older 6.0 6 speed in power.
If your buying a 5-10year old suv, 2500 Sub is a good choice. If you’re considering new then a new Expy is an all around equally or more capable rig.
