Mickey, a 3406, 13 speed, and 355 gears?? That a rocket ship. I what a early narrow nose Pete 2 axle with a low profile double wide sleeper, a 400 Cum-a-long or a kitty cat would be fine, but you know who said NOOOOOOOOOOOOOOOOO. RAAATS. BTW, what does your DW think about the straight stacks??? Ya got to hit the "jake" when coming into a CG and rattle a few windows. Thats a sweet tug mobile.