I believe I have found the cure. Use a Lincoln Mark VIII fan with shroud. This is a 2 speed unit but mine is wired for 1. With a little trimming it fits just fine. I cannot get my FE to over heat. Believe me,I have tried. I did have to upgrade my alternator as this fans draws 45 amps, but if over heating is an issue, go to the Ford dealer and buy this fan. End of the problem.
David