OK, I'm going to have to say it again - because I see a pattern developing here.
EVERYONE I have ever personally known with a classic car overheating problem seems to have experimented with electric fans and found relief finally by going back to a good 'ol HD clutch fan and shroud that the factory designed for their car for A/C or HD cooling applications. This has crossed different makes AND models of cars, too.
I have seen this enough times that I would never consider electric fans as a potential solution. I just do not see how 12 Volt electric fans can come close to pulling the CFM of air like a belt driven metal fan.
2012 Mustang Boss 302 #1918, Competition Orange. FGF replacement 2006 Mustang V6 Pony, Vista Blue. Factory ordered. 2019 BMW X3 (Titled to the wife, but I'm always driving it for her. So I'm claiming it) Old projects, gone but not forgotten: 1967 FB 400, original CA car. After 22 years of work, trashed by the guy who was supposed to paint it. I had to sell it. 1980 Turbo Trans Am 1970 Mustang fastback, 351C 4Bbl, auto 1988 Mustang GT, 5 speed 1983 F-150 4x4, built 302 1994 Chevy K2500 HD 4x4, 454 TBI