[rotorwrench]

The short snout cranks usually fit better in the early cars. The Long snout crank used starting in 1939 can sometimes be a challenge to clear the crossmember with a later type pulley on it. The 39 standard pulley is the best bet for long snout crankshafts but they are hard to find now days. A 59A type can have the front sheave cut off if you run the generator fan set up.