The gutted supercharger is only a thing because of people who have the supercharged top end and want to go turbo... so you remove the rotor pack from the blower and then you just have a fancy looking plenum. It's not something to be added on, it's just a way of dealing with it without having to switch over the whole top end of the motor.
Since you're not supercharged to begin with, you dont even have to worry about it. The z7 kit should bolt right up to your existing setup without you having to worry about the plenum, LIM or any of that other stuff.