That was a buddy's shop rig. IIRC it was an '04 GMC Canyon w/the 5 cyl. engine, and I think it was a 5-spd. It seemed to have enough power to tow the truck through the Sierra's(to 7k ft) w/o much issue on the open highway. A little slower on the mountain roads and crossing the summit, but it wasn't too bad. A V-8 equipped rig would tow it a lot easier, something like the 1st gen Tundra shouldn't have a problem.