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Gentlemen,
I have a '96 F350 (7.3 Diesel with manual transmission, the rear is a 4.10:1 but the wheels have been changed) .. I want to do a custom instrument panel and use a Stewart Warner (Wings series) electric speedometer .. does anyone know the pulse count per mile or revolution for the original set up .. it will give me a place to start with synchronizing .. Alternatively any thoughts on the GPS units that don't require one to know the wheel revolutions per mile etc. Thanks in advance