Haha, funny man - go for it! It towed the toy hauler fine, plenty of power. You're not going to beat an F-350 up a grade or anything, but I had a Tundra with the 5.7L V8, and this thing has WAY more power, even with the 37's. My hauler is 6,500 dry, and when I tow it is 10,000 loaded with the SXS, fuel and water. I used a Centerline TS Weight Distribution hitch which works wonders! You need that if you don't have something similar already... Also, I just installed the 3/4" rear spacer from Foutz Motorsports. I have the 2.25" RPG collar in the front, and it sits PERFECT now with this spacer in the rear. It even drives/feels better with the ass end up, I was really surprised what a difference!
The MPG is not so great, I was about 6.5 MPG average. But I'm at like 8.4 MPG around town, these tires must just kill the MPG, because I've seen others saying there in the 15's plus - not here! Lol I'm 120 lbs at each corner with this setup, not sure what stock is. And I'm constantly on the gas.