john the 4070b pictured is similar too the 78 i drove in the 80's. it had the 290 with a 10 speed. got about 6 mpg avg running 71 mph when i could get away with it everything was 55 back then. as koolkar said they were made too carry a load and rode prttey stiff. it doesn't say if that one has it but mine had a air operated cab jack so you could just hit the button and it would tilt. jus don't forget your in a cabover the first step is a big one if you do. the dayton wheels on the rears are easier for the average person to deal with than the inner and outer nuts that were common at that time for budd type wheels
