I have been doing some more research for you. One person who has been down this road before, converting to an electric fan, is Greg ~ Dakota Boy. Here is what he put on his '58 Tbird with a 460 engine.
Late 90's Ford Contour V6 dual fan 24" x 16" x 3.5" w/shroud using a Flex-a-Lite 31163 electronic fan controller. This electric fan fits the OEM radiator perfectly.
New; from ebay for 100 bucks total; shipped to my front door.
Fan controller mounted in the rectangular hole at the bottom left corner.
Go down to my #1 post on this link to see what I found at our local Pick & Pull. As I recall, this is the fan that I sent to Dave who has this fan running on one of his Fords now.
Here are some pix of what Gregs fans look like, and in my thread, there are some pix of the fan I got off that Ford in the junk yard.