I have a 67 c-40 with a 283 v-8 (original) with sm420 4speed. I have a 12 ft. contractor body with twin ram hoist on it. It has a 4000lb. front and 15000lb rear axle. I purchased the truck in 1984 and have used it almost daily since. It is on Jim Carters site (Old Chevy Trucks .Com) under working trucks.He did the story about 4-5years ago at Iola. I am going to freshen up the motor and body this summer.