Yes, the faceplates are interchangeable, so it is theoretically possible to just change out the drivers, and keep the original faceplates. Both tweeters are a nominal 4 ohm impedance, so they are compatible in that regard. The spec sheet above shows a crossover point of 4000 Hz, which is certainly within the performance range of the EMIT k--which can be used down to a 3000 Hz crossover point. I have no specific data available on the sensitivity or frequency response curve of either driver, but I would guess that they are the same, or at least very similar. EMIT k's are plentiful and fairly inexpensive (~$100 or even less for a pair), so I would seriously consider trying, but that's just me.
Good Luck!!![/QUO