This is not mine but it looks really good, no worries with the weight police. If I were full time ...... https://phoenix.craigslist.org/cph/ctd/d/fontana-2007-ford-f550-4x4-custom/7033665555.html
With only 45k miles and probably pulling most of it's life it would not even have any injector stiction or over heating issues with the EGR/Oil cooler yet. Engine is almost "new".
Pretty sure it's not worth $50k US dollars though.