Series 2 Plug & Play EMS. Manual Trans. 64 Pins. INFINITI: 91-93 G20. NISSAN: 89-92 240SX LS/SE/XE, 89-95 Bluebird SR20DET, 91-93 NX SE/XE, 90-94 Pulsar GTi-R SR20DET & 91-94 Sentra SE/SE-R/XE. 50mm AEM Trigger Disc included. Some applications require the 54mm part#30-8762