I used their v-groove pulleys and will tell you when I had their nose cap on the water pump, I had less than 1/2" clearance between the tip of it and the Mystique/Contour electric fan setup I had.
As a side note, be careful with pulley ratios. I have cooling issues and some of them (though not all) may have been the result of using their underdrive pulleys. I have a custom dual pulley setup and ultimately had to have a water pump pulley custom-cut to restore the factory crank-to-wp ratio. If your car runs consistently cool, you probably have nothing to worry about.