Short or long water pump
I need to get a water pump, fan, shroud, and radiator for my 67'. It had a 400 small block in it that I am rebuilding to install in it. I don't have the fan, radiator, or shroud that was in the car. The water pump that was on the engine is a long pump.
I want to buy a new water pump and am trying to decide if I should buy a short or long pump. I know the car originally cam with a short pump. But all my brackets and pulleys are for a long pump. Can I use a long pump? If I do will I have fitment issues with the fan, radiator, or shroud?
Should I use a long pump or buy a short pump and replace the pulleys and brackets?
Also, I want to use good thick radiator. I don't know if that will affect the decision.
Thanks for any advice.
67 RS, 406 small block, TKO600, Moser 12-bolt (3.73)