This kit will allow you to install an S300 based Turbo on your 20010-2012 6.7 Cummins with a 2nd Gen Style Exhaust Manifold (Sold Separate). If you are not purchasing the turbo and manifold from us you must specify the brand of turbo and manifold you are using, some brands may require that you send the parts in to us for the kit to be built. Each turbo kit is hand built in house by our experienced fabricators and welders. Every part is built and test fit on an engine to ensure proper fitment. All tubing is TIG welded and mating flanges are CNC machined with O-ring seals where necessary for a boost-leak free setup.