Platinum Sport Plug-in - GM Kit Australian Market: all VN-VP & VR-VS Manual trans only with DELCO ECU, US Domestic Market: early GM TBI/TPI with DELCO ECU, Camaro, Firebird, Corvette 86-89 (V8 TBI & TPI) Chev truck/van & S10 (all TBI & TPI) (REQUIRES AN I/O BOX TO ACCEPT AN INPUT FROM A FLEX FUEL SENSOR) *Auxiliary I/O Harness Plug and Pins are now included in all direct plug-in kits