Those are very nice 5ers indeed. As others have noted. Your 3/4 ton gasser will not do the job PERIOD. It will not! We have a Ford F 250 auto 351, 3:73 at the shop. It will bottom out when we have a Kountry Star to move, and power out. That truck will move them in/out of the service bays, thats about it.
We also have another shop truck. A Chevy 3500 Duramax, Allison, Dually, flatbed, 4:10. This truck still slams the overloads, but will pull and handle the Kountry Stars decent (not great) but decent, even on the highway at highway speeds.
