Well, this was kind of a let down. I searched the junk yards, found an electric 2 speed fan from a Taurus and it mated up to the D90 radiator very well! I had to weld a 1.5" piece of square tubing to one side of the radiator as a support/seal, but that was easy. You could bolt or rivit it if you wanted. Then just a little tab bending and a couple new holes and VOILA! I used a 3-terminal fan controller out of a VW Jetta (1983) that fits directly into the thermostat housing for the fan switch which turns the first fan speed on at 95c and the second at about 102 C. Problem is, the water pump shaft hits it by about .5". So much for eyeballing it. My tempormental viscous fan is back in for now till I calm down and sort it all back out, but this just won't work unless you either move the radiator forward (don't see that happening) or cut down the fan shroud (maybe.....).
Just wanted to save some people some work.