My husband and I have not owned a 6.0l but we have a 2001 7.3 and I just bought a 2008 6.4L. We have a raptor triple axle and both tow it awesome. both have mods. 2008 has sct off road program. It's not a dually. But we have entertained the idea of a dually and if we were to buy. It would be the 6.4l. I love my truck and I test drove alot.