for the USA.. the model years are:1991 - 2005 1991 -1994 - 3.0L 270HP motors1995 NSX-T - First year for the targa top version.1997 First years with 6 speed manual trans and larger 3.2L motor with 290HP2003 - 2005 new of the front end with fixed headlights. Drivetrain remained the same. Rumored to have next generation of NSX in 2008/09 with complete new design, 500HP V10 motor.