For General Motors. 2010 Camaro with Tremec Transmission J-39439 consists of four (4) tools. J-39439-1 is used with J-36190 Driver Handle to remove the extension housing shift rail bushing; J-39439-2 with J-45124 Puller Bridge to remove the adapter plate bushing and case bushings; J-39439-3 with J-36190 to install the rear case bushing to its required depth; and J-39439-4 with J-36190 to install the front case bushing. Each remover or installer of J-39439 is used with the driver handle or puller bridge to properly remove or install the shift rail bushings, and to prevent damage to the bushings, the case, or the extension housing.