Sean,
The one in the bed is most likely a 1950-53 low-pressure 235. The give-away is the two-bolt valve cover (pre-54 216/235) and the side cover that does not go over the spark plugs. The side cover went over the spark plugs on 216s until 1953, but only went over the spark plugs through 1949 on the low-pressure 235 1950-53.
I cannot make out if the side cover comes over the spark plugs on the engine in the truck.
Tim
