i would contact them and ask about the warranty!!!!!!!!i run a compucar nitrous system they carry a lifetime warranty nitrous express also carrys a lifetime warranty...and as legalize 420 said there is not much to a wet kit, fuel and nitrous just ensure you have a sufficient fuel pump and get a tune...tunes run about $85 and you will be safe.and one of the more important in running nitrous is have a good filter!!!
that is a complete kit. you should upgrade the fuel pump regardless but you could get away with a 75 shot.
yeah the kit looks complete and i agree with 420 and bill, there isnt much to mess up on a wet kit. all im saying is if i was doing it again, id go with a nib zex or similar kit just for the peace of mind. if you do get this kit though id go ahead and spend the money you save on a fuel pump and afpr, because once you run a 75 shot for a while, youre gonna want to go up lol