My truck is a late 47. It is a 3/4 ton and was a one owner when I got it. The family sold it along with the farm after the farmer died. When I picked it up I went through it to see what it needed. All of the grease fitings were good and un cloged. The oil in the crank case and air filter was fairly clean. The only thing that needed work was the bed. I have been driveing this truck for three years now with few problems. So far most people I have talked with tell me "pull the engin and store it, put a 55 - 62 in it. Would it maybe be that I should just rebuild this motor?