This is a Synchro kit for the 2WD 5 speed Nissan with the FS5W71A transmissions for the years 1977-80. This transmission used the same size synchro rings in 1-4 and a black fiber "crush style" ring in 5th! The black fiber 5th gear synchro ring is NOT included in this kit. Nor is it available! This transmission can be found in the Nissan: 280Z 1977-78 280ZX 1979-80 810 1979-80 *Note: Nissan used a variety of transmissions so it is very important to compare your transmission with the information below to make sure you get the correct rebuild kit. This Transmission is made with a (1) piece aluminum case and bell housing and uses a 63/22 front countershaft bearing (2.200" or 60mm outside diameter).