Since you have a 2k2 GT, Turbo options are more available for you, For running nitrous on a stock engine I would run a wet system 75 shot max, after that your gonna need to upgrade your internals to avoid blowing shit up. A good choice from experiance is a ZEX system or nitrous express. If your running the Turbo your already going to need the controller and new fuel maps, running Turbo and nos will require definiter internals upgrades, as well with ignition, oil pump, fuel pump, fuel rail, injectors, cam gears, etc...For them to both run kosher together. All that nitty gritty stuff with timing and spark advance and that good stuff. Stuff a professional shop should take care of.