it also says: We currently offer two levels of turbo system for Nissan make cars. Our first level is the Superior which is designed to add 30% horsepower to your car. Our second level is the Extreme which is designed to add an addtional 20% of horsepower over the Superior turbo package (56% increase from your unmodified car).
56% wouldn't be all that impressive for a 1.6... the HS kit did well over that in stage one... and well over 100% in stage 2... I personally don't know anything about this kit...but it appears to be a generic kit and site... no dyno..etc..
well.. it comes with downpipe, manifold.. alot of the stuff to make a good turbo.. slap a T28 on there.. and whalah.. EDIT: actually.. more research needs to be done.. like.. what PSI can be handled, etc etc.
And notice the "Superior Kit" doesn't come w/ a lot of things to make the car run efficiently. first off, they are using a blow-off valve, which should be a bypass valve. second, no new injectors, or any type of fuel management. no form of cooling from the kit. and comes with a MAP unit? dont even know if that will work on our MAF cars.