Or, you could get a water pump adapter and use the 216 water pump. This places the fan higher up for more efficient cooling, provides plenty of clearance for the fan, and makes the 235 look more like a 216 for the "original" look.
Do a search on this forum for "water pump adapter" and you will find all kinds of great info. A fellow 'bolter manufactures and sells them. I would have used one if I hadn't found a '54 261 that came from the factory with the old style pump.
Steve
