I know for a fact you could safely use 200hp out of a single shark nozzle. Im sure you could get 300 as well. But I wouldnt recomend it. If you really ever find out how much 300hp worth of nitrous is, then you will understand what Im trying to say. I am currenty running a 300 shot on my own personal car. It runs 10.80s on the motor, and dips into the 9.teens with the 300shot. Thats breaking the converter on all 3 passes. This is in a 3200 lb stock suspension car. And the converter isnt a cheap peice. Got the problem solved now, but just trying to give an example of how much power 300hp really is. And let me tell you, its a ton of torque when you launch off the transbrake with it! Try it, you will like it, but I doubt any stock bottom end will handle it!
The solenoid will make 300hp. It is a .093 orifice solenoid, and used in all their stage 6 plate kits, which i have personally tuned to 300hp. If you want more then that, then you step up to the PRO POWER solenoid, which is a .125 orifice. That boy will easily give you up to 600hp. Now if you are a real badass, then step up to the SUPER SHARK, which is a .157 orifice. 1000hp here we come!!!!