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I don't know whether there is a difference or not. I am also on MS (though mine is a 4AGE) and just today got rid of the distributor in favor of an EDIS coil from a Contour of unknown year. I am not using the EDIS module (MS controls the coil pack directly) so I just grabbed whatever EDIS coil I could find and didn't worry about compatibility.
I've heard even the stock Ford coils put out a pretty good zap, so you might just run the one you have until it proves incapable of firing under heavy boost.
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