I have a 1955 GMC truck,model # 9434,serial # 59434623029,engine # C94848, body # 208 and paint # 539. This all on the door tag. Does anyone know how to break this down? the model 9434 is on the tag and on the grill it has 9430,the engine # on the tag is the same as on the engine but don't know what size it is, has a 4 speed transmission but don't know what it is either. If anyone can help me please and thank you it would be apreciated.