At Roush Yates Performance Parts we take pride in the quality of our race proven parts. All of our race proven items come from either our Cup, Nationwide or Truck series engine shops. These items were either mileaged out or sent to us due to an engineering change. All items are inspected before being sold so that we can be sure you are getting the highest quality parts possible. If you need an item that is not on this website or have any questions at all, please feel free to call or e-mail us at parts@roushyates.com.