This kit contains everything you need to convert your 911 from a docile street car to a race winning club racer. It is a complete kit which will allow you to replace every bushing in your suspension, upgrade to giant torsion bars and light weight adjustable sway bars and get that bump steer right for your lowered car. We have put together several race cars with this setup and the drivers loved them. The only other thing you will need to do to make your 911 handle its best is get some shocks. We recomend having you current Bilstein shocks custom valved for your car or getting a set of Bilstein Sport shocks.