Would replacing my clutch fan on my 420sel with an all electric fan or with a flex fan make any noticable or worthwile improvents to cooling while idling with the a/c on or power?

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1984 300SD Orient Red/ Palomino
1989 560SEC
2016 Mazda 6 6 speed manual
1995 Ford F-150 reg cab 4.9 5speed manual