Yep. I was going to order a new dually and then after looking more closely at the numbers, and from the help of these kind folks here, I've decided to go Tremor now instead. Just have a couple of more payments on the wife's Highlander and then it's on like Donkey Kong! I'm getting the F350 with the 11,500 GVWR and my 40' Fifthwheel loaded is around 13k. I'm expecting amazing results. Oh one other thing, (and folks correct me if I'm wrong), you automatically get the 11,500 if you upgrade to 3:55 gears with the 6.7.