What you're left with, well, is not much - as the weapon causes unprecedented mayhem. Taking the Cyber Buster as a base (which by the way, looks suspiciously like a Mega Man blaster) the mod replaces the standard zapping attack with the power of the VTOL weaponry. If what you seek is complete power to cause utter devastation among the city populous, look no further then the Eradicator v1.0. This includes the Riot Shield, Brute Minigun, Brute Incinerator, Luchadore Grenade Launcher and my personal favorite, the Shock Hammer.
A fan of the temporary weapons of Saints Row: The Third, I was happy to see Snipe fix that issue with Permanent-Temporary Weapons Unlock Mod which unlocks all the weapons you couldn't previously buy from your friendly neighborhood gun store. Nothing makes me sadder than getting an in-game toy and finding it swiftly taken away after a mission.