I have been offered a 6cyl engine to purchase along with a car. I believe it is about a 1925/26. The casting # on the L/H side next to the Buick logo is 189040-4. Above this is 0197. The serial number on the tag is 1949050. The nuts on the valve cover are of the acorn type. It has a down draft intake, which I believe to be not of the same year. What year is the engine? When did Buick use a down draft intake that would fit this engine? The engine is nearly complete, in dry storage, any thoughts as to value? Thanks, Carla