So I went to the junkyard the other day to find an electric fan from the early 90's 3.8L Taurus. Plenty of Taurus' there, but none with the 3.8L engine. I rememberd hearing something that people have said the fan from a Mercury Village or Nissan Quest was a near perfect fit. Took me 5 minutes to locate one and another 5 to pull the fan out. I paid a whopping $15 for the fan and brought it home. I've just finished getting this installed and setting it up. The fan fits inside the OEM shroud nearly perfectly.
I disassembled the fan; took the blades off as well as the motor so all I had left was the protective cover/shroud of the Mercury fan (referred to from here on out as the fan). I stacked the fan on 3 rolls of tape (scientific I know) so that the top of the fan (leaving edge) was level with the leaving edge of the Mustang shroud.
I decided I wanted 6 bolts holding the fan in place, but I didn't want the bolts very visible from the top of the shroud when looking down into the engine bay. I picked the place for the highest bolt locations to be at approximately 2 and 10 o'clock, and then measured around the circumference of the bottom of the fan. With 6 bolt holes the spacing of my bolt locations was 8-3/16". I marked these spaces and then drilled a small hole in each location. You can see some of the holes in the shroud in this picture.
Then I held the fan in place (still on my 3 rolls of stacked tape) so it lined up with the Mustang shroud, then drilled a hole into the fan using the holes in the Mustang shroud as a guide.
Then I used (6) #10-32 x 1-1/2" screws along with locking nuts with a nylon insert to prevent the nuts from backing off. There is roughly a 1 - 1-1/4" gap around the perimeter of the fan between the edge of the fan and the Mustang shroud. I was surprised how sturdy this thing is after it's all installed, but it's held in there pretty tight
I'm out of town for work all next week and the car should be done with paint sometime next week, so hopefully I'll be able to pick it up next weekend after I get back in town. I can't put the fan in until I get the car back obviously, but I also need to decide if I want to splurge for the DC controller. I'm having trouble finding information about the amp draw for this fan, especially when it first kicks on.