go with a wet kit because then you dont have to worry about adding fuel to your tune because with a wet kit it adds fuel with the nitrous were as a dry kit is just nitrous. and id think you would be safe with 100shot. a friend of mine was spraying 250 into a avenger for a whole season with no problems with a wet kit and droped back his timing. do you have a gtp or a gt, without boost you might be safe with 150.