I am restoring 1959 White Mustang 4264 that had a 477cu inch White gas engine new from the factory,and after running it for a few years,they found that when they were moving a large crane this engine would vapor lock and quit on them. This company then had it repowered with a 6-71 GM diesel and ran it up into the 80s.It sat at their farm for 15 years and was sold to some one else.I bought it from him and have been restoring it for the last 10 yrs.This was the 2nd truck I ever rode in when I was 4 or 5 yrs old.6-71, 5C-72 Fuller,7231 aux.,SLDD Rockwells and Garwood winch.Of course,the first truck I rode in was a B-61 that was also repowered with a GM diesel,but was a 4-71 and had a R.O. crane on it. Tim