Do a search on this board for Taurus fan or jeep fan or dorman fan.
There are some good writeups where guys have gone out to the salvage yards, picked up a common fan assembly/harness, modified it appropriately and installed it with success.
You'll find wiring diagrams describingg how to build your own harness with relays and how to wire up your salvage yard fan to make it kick on/off with the temp of your coolant.
Here's a good start:
http://67-72chevytrucks.com/vboard/s...ght=taurus+fan
Hth,
-klb