I am selling a brand new UUC Motorwerkes lightweight pulley kit that works with all E46's. It is still in the box and has never been used. It comes with all the instructions and components to install into your bmw. This underdrives your pulleys, but not the alternater - which is something you never want to do. It adds horsepower and torque without any major modifications. All you do is install the new pulleys, and then your off! Can be changed back to factory pulleys without any problems and with ease. E-mail me at [email protected] if you are interested!