The X kit comes STANDARD with 3.5″ Downpipes, 4″ Aluminum Intakes, 4″ Turbo inlets, and Alpha X Spec Turbos with Billet Compressor Wheels which produce in excess of 1900 WHP! The competition can’t compete on the street or the track. All of the things that are standard on our X kit costs you thousands extra with the competition. And, unlike the competition, our kits require NO MODIFICATIONS of your cars unibody. The X Turbo Kit spools faster and makes more power and all with an OEM level of fitment that saves you time and money on installation costs. This is quite simply the ultimate R35 GTR Turbo Kit on the market.