If installing a Super Tweeter is your primary objective, you will need to identify the Super Tweeter and source it.
Its crossover will have to be designed (can be a simple series capacitor) keeping in mind the impedance of your super tweeter & Boston Acoustics A360, as well as the Crossover frequency... Could use different capacitors for different Crossover frequencies where the super tweeter will kick in.
Do keep in mind that Super tweeters operate ONLY at the Extreme High Frequencies... eg. above 8 KHz.
(I suspect that your expectations are extra trebbble that would require an extra tweeter, rather than a super tweeter)