Yes it launches off the start line very well even with the camper on it and I'am at about 10K lbs. all loaded down. The 4.44 gears help with that also. Just about due for its first fluid change and been quoted about $250.00, not cheap to do, actually it's about the same as on a Toyota Tacoma/FJ Cruiser with a auto, but have to do twice as often.I love the Aisin trans, that super low first gear helps get the heavy trailer going. I’ve never driven a gasser truck with the Aisin trans, but I bet it’s very solid platform that works great together.
Have you done a fluid change yet? I did my first on at 30k, it wasn’t cheap.