RJacks you're crew cab dually weighs just 7500 pounds?? did you have it weighed? Sounds light for that body and cab configuration. Also, as lilred said - do yourself a favor and get head studs. Since you have a 2wd you might be okay to pull. I've seen more front hubs go out on 4x4 superdutys pulling than anything else. As long as you have good u-joints you should be alright.