On a RWD vehicle the turbo replacement process is simplified and labor time reduced by way of parts not interfering with the installation process. Coupled with an installation method that allows a new turbo “cassette” to be installed without the physical removal of the turbo manifold the process cuts the need for replacement gaskets as they are left intact. Unfortunately on an xDrive vehicle this process is not possible and the turbo manifold needs to be removed. The result is a more labor intensive installation and the need for additional replacement gaskets. This kit provides those additional gaskets and other related components needed for installation of the N20 turbo upgrade on an xDrive vehicle.