Every gearbox we do gets a full rebuild. This means we take it apart completely and check every component for wear. This gives us a better idea of the state the gearbox is in and what we can expect when we upgrade it. We have a margin for parts but if it is not up to factory tolerances it gets replaced. This is one of the reasons that people enjoy working with us. Every part of a Porsche has to be in pristine condition because it deserves no less than that. We like to follow that up with the products we supply and the upgrades we carry out.