Definitely a four speed type…..correct for the 1941 V-8 that it’s attached to. It may have the shifter lever with the little trigger operated reverse lockout release (located just below the shifter knob). The ball bearings, caged roller bearings, paper gaskets, rear oil seal are all available….we try to keep those all in stock. After that, it gets very sketchy on what is available. If your truck was a 1/2 ton pickup I would be suggesting that you change over to the three speed transmission for drive ability and parts availability. Not sure if that is doable with the 1 ton truck. If the gears are still in decent shape, I’d refresh the bearings and use it…..getting used to double clutching on every shift.