This is a kit to make your LS3 Twin turbo. Modal of a LS3. One side of the Turbo is going to have to be mirrored and the manifold is the same for both sides. DO NOT MIRROR the manifold. Your going to need 10x3x2 bearings for the turbos 4 of them. and some all m3 all thread. and disc magnets 4x2mm. Thanks so much. have a great day, make sure to rotate the manifold 90 and use supports touching the plate.