Some of the more common performance mods are Dual CAI, supercharger pulley and or crank pulley, custom ECU tune, performance intake manifolds, custom exhaust with cutouts, separated cooling system, ported polished components, and a LSD that is currently in production. A search on these items will fill days of your spare time. A good place to start looking is one of our premier vendors
Performance auto parts & aftermarket auto accessories for your car, specializing SRT4, Crossfire SRT6, SLK32, C32 AMG, VR-4