I'm putting a 255 in my '36 and will run the fan on the alternator, stock position. I found a 6 bladed fan for it. I'm thinking of making a fiberglass fan shroud which would basically cover the lower half of the radiator. Seems to me that the way the tank hangs over the fan, it acts as a semi-shroud anyway. Anyone built and used a shroud on a '35,'36 with a fan in the stock position?