My 01 Yukon And Our Former TV and TT

My 01 Yukon soon to be TV and our Former TV 92 Jeep Cherokee 4.0 and 84 Sunline 21' TT I know the 4.0 was small and people thought is was crazy but I towed the TT with it from PA to SC through the Blizzard the east coast had a couple years ago that stretched from New England to Georgia, The Anti Sway and WD helped drastically, My wife said the Navy Admiral who sold it to her was towing a horse trailer with it, it was a bit rough in the Hills in PA but it did OK going down I81 and I85 kept the Jeep for almost a year and a half till We traded it inn to Buy the Bigger Yukon.
The only ting I did to the Jeep was install a Trans Cooler, Put in a New High Flow Cat, a MagnaFlo Muffler, and use a Heavier Weight Gear Oil in the front and rear Pumpkins