GT2871R bolt on turbo kit for Mazdaspeed3. Garrett GT2871R turbo with ATP proprietary exhaust housing and internal wastegate all ready to bolt up to Mazdaspeed3 exhaust manifold and downpipe. Includes all coolant and oil connections to connect turbo to factory lines. Turbo is efficient up to 20-21 psi on the MS3 2.3L turbo engine and can produce over 400 crank HP as configured with supporting mods and proper tuning. Does not include 3" inlet pipe and 3" downpipe necessary to complete a "kit" in order maximize the turbo. The GT2871R is very responsive on the 2.3L turbo engine and is very commonly used for best all around power up to 400HP. Highly recommended for a very broad powerband with a lot of "area under the curve".