All transmissions rebuilt at GWA are done to the highest standard, for over forty years we have prided ourselves with the upmost quality of work. The gearboxes are built by long serving and well trained engineers using parts made in house. As the leading manufacturer and supplier of parts we make sure no transmission is ever rebuilt with inferior or worn parts. After the rebuild, every gearbox is subject to a thorough dyno test to check pressure levels, gear quality and for any leaks. A full test report is then done and presented to each customer with a DVD of the gearboxes performance on the dyno. This way every customer has complete peace of mind knowing exactly how their gearbox has done.