Thanks for the welcome!
There's really not much to tell about our rig. The reason we bought the Kenworth is we discovered that a normal pickup truck just does not have enough mass/brakes to safely pull a toy box fifth wheel (IMHO).
There's a small mountain in Northwest Georgia and a state park at the top of it . . . Fort Mountain. We pulled our 35 ft toy box with our year 2000 Cummins powered Dodge diesel outfitted with a six-speed manual, exhaust brake, etc. We had absolutely no problem in pulling our toy box up that mountain, but I told my wife before we even got to the top that coming back down was going to be exciting. Boy, did I ever speak a prophetic truth. We came down in first gear, i.e., "granny gear" and I would let the engine and the exhaust brake slow the trailer as much as possible between curves, breaking hard only just before each curve, slowing the trailer down to approximately 5 to 10 miles an hour. We did this all the way down the mountain and the trailer brakes still overheated. When we got to the bottom, I told my wife "we will never pull our camper in mountainous terrain with this pickup truck again. We're going to get a bigger truck". So, I started doing the research which led me to the same place most other HDT owners have reached. We bought our Kenworth from an owner operator. It was in Very Good shape, only had 500,000 miles with an Eaton 10 speed autoshift (it has a clutch to start/stop)and a Cat 3506E. We've only towed in the southeastern United States and really not that much before other events in life sidelined our RV travels. We're now ready to resume some travel again and to that end we have purchased a new-to-us New Horizons Motomover toy box (2007). It's approximately twice the weight of the toy box we had before @ 26,250# GVWR.
However, we are very confident that our "T2 Motorhome" will be more than enough to handle that trailer in any situation! Thanks again for the welcome. We have been around for years, but mostly in the background. 😁