If you motor is healthy , it can handle nitrous , ALOT of it. On stock everything i think a 75hp shot is something that you can call safe.
Trans can hold it pretty well too. The only thing tranny doesnt like its the overspin , the differantial pin will pass through the case if burnouts is your fav sport.
If you want to have that power always , theres several boltons and mods , that can bring your sho to 300 hp N/A no juice , and 500hp with a blower.