You have been making modifications to your vehicle so that it can drive meaner, tougher, and faster. No matter how many power boosting parts you install, it is possible that you are still not getting the power that you desire. Never fear. It is still possible to get amazing acceleration possibilities by installing a Roush ring and pinion set. For your 8.8 axle, there is the choice of a 3.55:1 ratio or a 3.73:1 ratio. You should make your choice between these two possibilities based on your particular vehicle's needs and capacities. By lowering your ratio, you enable your ride to be able to shoot away with amazing acceleration. Roush has been around since 1995. In the time since it was founded, this company's reputation has grown tremendously. It is know for creating fantastic racing parts that can also be used on street vehicles. Give your ride the ability to give you whiplash as it quickly accelerates no matter what type of driving you do. You will love the quality, the durability, and the power that you get from a Roush ring and pinion set. All of us want an outstanding level of customer assistance when considering good quality car parts from us. For all our customers, we make available a 24-hour, 7 day a week sales assistance call desk to answer your questions. Everyone hates paying for shipping, so we offer completely free shipping on every order at least $50. If you can find a better price, call us - we will meet or beat any advertised price for auto parts.