all 94-2003 7.3L IDM's have the same output voltage from the factory, though there are 4 different model numbers.
They are interchangeable.
To check voltage, you'll need an oscillioscope, as the voltage at the injector wiring is a PWM signal...so a (normal/DVOM) voltmeter won't be able to 'catch' the short (.002s or shorter) signal from the IDM.
if you have an oscilloscope, you will look for a signal that looks similar to those shown here, stock 94-03 IDM's output 110vdc regardless of the IDM model number.
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