[deuce lover]

33-36 fan hubs are 1" .The 37,38 Pass car fan hub is about 2" .I tried one of those on my old '36 and it was to close to the radiator. Something is up with the location of the water outlets on your radiator maybe.On my old '33 the fan clears the hoses by1/4".A friend machined a aluminum 1/4 " spacer for me to get the fan closer to the radiator. I ended up not using it and went back to stock position.Don't know if this pic helps.