I have a 96 4x2 7.3 with 190k tow rig and DD. Other then getting the trans built its been rock. Tows I80 up donar at 65mph. last trip got 12.5 towing, gets a solid 18 empty. The wifes ride is 2003 last of the 7.3s, Excursion that is here toy. 4x4 on 35s 4.30 gears. has 265K on that one and we use it tow with as well. in a week we are heading to Kyburz in it towing the heep for a month wheeling. gets about same mpg, but has a lot more power, depending on tune selected. But it has a lot in it too. Thats is all we have too as DD. i wont spend a dime on anything new ever again. 7.3 are rather low cost to rebuild if and when that day comes. compared to about any other oil burner you can think of. cost zip to insure, tags are 30 bucks a year, no payments.