Cooling System Update for 64 Dart

How much room is there from your water pump snout to the radiator? With a big-block it is very tight - other useful fans like the Chevy HHR won't fit. In fact the plastic on the fan shroud has to be trimmed a little to get any clearance at all. Here's a couple of snaps.DSCF0175.JPG DSCF0179.JPG
It's been many years since I owned a slant-6 A-body so I don't recall how long they are.