Waste of money going 4 stages on such a small shot. Just run one 100 shot and you will be good. People are scared of nitrous. I run 300 shot on my camaro, keep in mind the motor is setup for nitrous though. Nitrious is great and its good to be cautios but you don't need to be so careful. I know a guy that has run a 150 on his lincoln mark whatever consistantly for 10 years.