I think the 41-46 had three bars? The 39-40 is kind of a tweener when it comes to style. The 39 shared many items with the 38-37 like gauges, interior colors etc. The 40, while nearly identical to the 39 has a larger top bar on the grill, parking lights, sealed beam headlights, the 41-46 dash, and a wider bed. The unique part of these two trucks were the hood ornament, the hood trim and the grill design.
I love the design of the art-decos, but the 39/40's still have that 'older' look with the headlamps separate from the fenders.
